The Orange Box
2,291
(1,000)

The Orange Box

4.3 from 10606 votes
 

There are a maximum of 99 The Orange Box achievements worth 2,291 (1,000)

111,852 tracked gamers have this game, 2,350 have completed it (2.10%) | 434 want to boost

Zummers
26%

Zummers275 (180)

First played on 10 Jan 10

26 achievements out of 99 won

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The Orange Box Achievements

Deadly Harvest
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill an enemy by planting a hopper mine.
Grave Robber
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Steal a Zombine's grenade.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Continue playing to unlock this secret achievement. (Secret)
Malcontent
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Escape the apartment block raid.
Heavy Weapons
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Get the airboat's mounted gun.
Revenge!
View guide to getting this achievementRevenge!13 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Destroy the hunter-chopper in Half-Life 2.
Zero-Point Energy
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Get the Gravity Gun in Black Mesa East.
Watch Your Head!
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Make it to the bottom of the Citadel's main elevator shaft in one piece.
Containment
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Contain the Citadel core.
Elevator Action
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Survive long enough to get on the parking garage elevator.
Live Bait
View guide to getting this achievementLive Bait17 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Help Alyx snipe 30 enemies in Episode One.
Attica!
View guide to getting this achievementAttica!8 (5)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Destroy the gunship in the hospital attic.
Citizen Escort
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Don't let any citizens die when escorting them to the escape train.
Escape From City 17
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Escape City 17 with Alyx.
Acid Reflex
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill an acid antlion worker.
Into the Breach
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Continue playing to unlock this secret achievement. (Secret)
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
Lab Rat
View guide to getting this achievementLab Rat5 (5)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Acquire the fully powered Aperture Science Handheld Portal Device.
Fratricide
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Do whatever it takes to survive.
Friendly Fire
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Knock down a turret with another turret.
Bone Breaker
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with thrown physics objects.
Hack Attack!
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill five enemies with a Manhack.
Hot PotatOwned
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill a Combine soldier with his own grenade.
Conservationist
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill five enemies with the same energy ball.
Think Fast!
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill an Elite Soldier with his own energy ball.
Zombie-que
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Use flares to light 15 zombies on fire.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Continue playing to unlock this secret achievement. (Secret)
What cat?
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Break the mini-teleporter in Kleiner's lab.
Barnacle Bowling
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill five barnacles with one barrel.
Vorticough
View guide to getting this achievementVorticough24 (13)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Blast from the Past
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Find the HEV Suit Charger faceplate in Eli's scrapyard.
Two Points
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Use DOG's ball to make a basket in Eli's scrapyard.
Zombie Chopper
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Play through Ravenholm using only the Gravity Gun.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
OSHA Violation
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill 3 enemies using the crane.
Targetted Advertising
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Pin a soldier to the billboard in chapter Highway 17.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
One Man Army
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects.Missable - These achievements can be missed. Destroy six gunships in Half-Life 2.
Keep Off the Sand!
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Cross the antlion beach in chapter Sandtraps without touching the sand.
Bug Hunt
View guide to getting this achievementBug Hunt15 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Use the antlions to kill 50 enemies.
Flushed
View guide to getting this achievementFlushed9 (5)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill an enemy with a toilet.
Warden Freeman
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Survive the second turret standoff in Nova Prospekt.
"Radiation Levels Detected"
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Get through the toxic tunnel under City 17 in Half-Life 2.
Plaza Defender
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Survive the generator plaza standoff in chapter Anticitizen One.
Counter-Sniper
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill all of the snipers in City 17.
Fight the Power
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Shut down the supression device by disabling its generators.
Giant Killer
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Survive the rooftop strider battle in the ruins of City 17.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
Lambda Locator
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects. Find all lambda caches in Half-Life 2.
Pacifist
View guide to getting this achievementPacifist23 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Contain the Citadel core without killing any stalkers.
Car Crusher
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Use the cars to squash 15 antlions in Episode One.
The One Free Bullet
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Beat Episode One firing exactly one bullet. Grenade, crowbar, rocket, and Gravgun kills are okay!
Get Some Grub
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects. Squish every antlion grub in Episode Two.
Pinata Party
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects. Find and break every web cache in Episode Two.
Hit and Run
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Run over 20 enemies with the car in Episode Two.
Puttin' On a Clinic
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Defeat the chopper in Episode Two without any misses.
Cache Checker
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects. Find every radar cache in chapter Under The Radar.
Gordon Propelled Rocket
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects. Unlock the rocket launcher lambda cache in chapter Under The Radar.
Pedal to the Metal
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Beat DOG in a race to the White Forest base.
Little Rocket Man
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Send the garden gnome into space.
Neighborhood Watch
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Save all buildings outside the missile silo from destruction.
Secret Achievement
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)
Payback
View guide to getting this achievementPayback23 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Kill a Hunter with its own flechettes.
Partygoer
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Make the correct party escort submission position decision.
Heartbreaker
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Portal.
Terminal Velocity
1 gamer needs helpOffline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Fall 30,000 feet.
Long Jump
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Jump 300 feet.
Cupcake
View guide to getting this achievementCupcake17 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Beat two Portal advanced maps.
Fruitcake
View guide to getting this achievementFruitcake38 (20)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Beat four Portal advanced maps.
Vanilla Crazy Cake
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player. Beat all six Portal advanced maps.
Basic Science
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Time Sensitive - These achievements can be obtained by playing the game or performing actions at certain times or within a time limit. Earn bronze medals on all Portal challenges.
Rocket Science
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Time Sensitive - These achievements can be obtained by playing the game or performing actions at certain times or within a time limit. Earn silver medals on all Portal challenges.
Aperture Science
1 gamer needs helpOffline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Time Sensitive - These achievements can be obtained by playing the game or performing actions at certain times or within a time limit. Earn gold medals on all Portal challenges.
Turret
View guide to getting this achievementTurret12 (5)
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Accumulate 10 turret kills with a single turret.
Nemesis
View guide to getting this achievementNemesis10 (5)
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Get five revenge kills.
Hard to Kill
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Get five kills in a row without dying.
Master of Disguise
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Trick an opposing medic into healing you.
With Friends Like these...
Online Required - These achievements require a connection to live services, such as Xbox Live, for playing an online game mode, for sharing content, accessing leaderboards, or validating data with a server.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.6+ Players Required - These achievements require between six to eight participating players in order for anyone to obtain it. Play in a game with seven or more players from your friends list.
Dynasty
View guide to getting this achievementDynasty23 (10)
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Win 20 games.
Hardcore
View guide to getting this achievementHardcore50 (15)
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Accumulate 1000 total kills.
Powerhouse Offense
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Win 2Fort with a shutout.
Lightning Offense
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.Time Sensitive - These achievements can be obtained by playing the game or performing actions at certain times or within a time limit. Win Well in 5 minutes or less.
Relentless Offense
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Win Hydro without giving up a capture.
Impenetrable Defense
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Successfully defend Dustbowl without giving up a capture.
Impossible Defense
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Successfully defend Gravel Pit without giving up a capture.
Head of the Class
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Play a complete round with every class.
World Traveler
Online/Offline - These achievements can be obtained in either an online or offline mode.Single Player - These achievements can be obtained by a single player.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Play a complete game on every map.
Team Doctor
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time.Buggy - - These achievements may unlock after the requirements have been met or not at all. Accumulate 25000 heal points as a Medic.
Flamethrower
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement. Set five enemies on fire in 30 seconds.
Atomizer
View guide to getting this achievementAtomizer17 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Disintegrate 15 soldiers by throwing them into a Combine ball field.
Follow Freeman
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Gain command of a squad of rebels in the uprising.
Grey Matter
Online/Offline - These achievements can be obtained in either an online or offline mode.Versus + - These achievements can be obtained in a face off game mode by two or more players and everyone who has met the requirements will earn the achievement.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Get 25 headshots as a Sniper.
Camera Shy
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects.Missable - These achievements can be missed. Detach security cameras from the walls.