Full list of all 86 Halo 4 achievements worth 2,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 49 achievements worth 1,000 Gamerscore, and there are 5 DLC packs containing 37 achievements worth 1,000 Gamerscore.
- The Legend of 117
Complete the Campaign on Legendary difficulty.
3 guides
- Lone Wolf Legend
Complete the Campaign solo on Legendary difficulty.
9 guides
- Skullduggery
Complete any Campaign mission with 3 or more Skulls on Heroic or harder.
3 guides
- Bropocalypse
Complete any Campaign mission cooperatively on Heroic or harder.
1 guide
- Contact the Domain
Find a Terminal in the Campaign.
3 guides
- Terminus
Find all of the Terminals in the Campaign.
5 guides
- Digging up the Past
In mission 1, find and access Chief's record.
14 guides
- Midnight Launch
In mission 2, get significant air in the Warthog at midnight.
16 guides
- This is my Rifle, This is my Gun
In mission 3, carry a UNSC weapon all the way through on Heroic or harder.
10 guides
- Bros to the Close
Complete mission 4 without one preventable Marine death on Heroic or harder.
10 guides
- Mortardom
In mission 5, steal a Wraith and use it to kill at least four enemy Wraiths on Heroic or harder.
14 guides
- Explore the Floor
In mission 6, trick or force a Hunter to fall to his demise.
18 guides
- Give Him the Stick
In Mission 7, in solo Campaign, take out both Hunters using only the Sticky Detonator.
8 guides
- Chief, Smash!
In mission 8, kill 3 Crawlers in one hit with the Gravity Hammer.
11 guides
- Not Some Recruit Anymore
Rank up your Spartan-IV to SR-5.
3 guides
- Movin' On Up
Rank up your Spartan-IV to SR-20.
6 guides
- I <3 Red vs Blue
Win 5 War Games matchmaking matches.
2 guides
- Hanging on the Combat Deck
Win 20 War Games matchmaking matches.
2 guides
- Operation Completion
Complete a Spartan Ops Mission on any difficulty.
1 guide
- A Legendary Episode
Complete all chapters in Spartan Ops Episode 1 on Legendary difficulty.
2 guides
- Dedicated to Crimson
Complete all chapters in any 5 episodes of Spartan Ops on any difficulty.
2 guides
- Crimson Alone
Complete a Spartan Ops chapter solo on Legendary.
6 guides
- Roses vs Violets
Find one of the RvB Easter Eggs in Episodes 1 to 5 of Spartan Ops.
11 guides
- No One Left Behind
Save at least one Marine in Chapter 3 of Episode 2 of Spartan Ops on Heroic or harder.
6 guides
- Knight in White Assassination
Assassinate a Knight in any Spartan Ops mission.
7 guides
- What Power Outage?
Complete Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder.
7 guides
- No Easy Way Out
In Ch 1, Ep 5 of Spartan Ops survive the enemy assault during the defense on Normal or harder.
9 guides
- The Challenged
Complete a Challenge.
3 guides
- The Challenger
Complete 25 Challenges.
2 guides
- Armorer
Change your Spartan's armor in the Spartan Armor card.
4 guides
- Badge
Change your Emblem in the Spartan ID card.
4 guides
- PWND
Change your Service Tag in the Spartan ID card.
5 guides
- What a Poser!
Change your Spartan's pose in the Spartan ID card.
4 guides
- The Cartographer
Create and save a Custom Map in Forge.
3 guides
- Game Changer
Create and save a Custom Game type in War Games.
4 guides
- Snapshot!
Save a Screenshot from the Theater.
2 guides
- The Director
Save a Film Clip from the Theater.
3 guides
- Sharing is Caring
Upload a File to your File Share.
4 guides
- Bromageddon
Complete the Campaign cooperatively on Heroic or harder.
2 guides
- Now they Fly?
In Crimson DLC matchmaking, get a kill while airborne in a Warthog.
8 guides
- Size is Everything
In Crimson DLC matchmaking, kill 20 enemies with a detached Machine Gun Turret.
1 guide
- ODST
In Crimson DLC matchmaking, kill a player while airborne from a Man Cannon.
7 guides
- Bigfoot
In Crimson DLC matchmaking, kill 20 enemies using the Mantis' stomp attack.
8 guides
- David and Goliath
In Crimson DLC matchmaking, board an enemy Mantis.
4 guides
- Pump Yer Brakes
In Crimson DLC matchmaking, score the killing blow on a Mantis.
4 guides
- Clay Pigeon
In Crimson DLC matchmaking, shoot an enemy who’s airborne from a Man Cannon.
6 guides
- Special Delivery
In Crimson DLC matchmaking, kill an enemy with melee when landing from a Man Cannon.
5 guides
- Didn't See It Comin'
In Majestic DLC matchmaking, assassinate an enemy who's in zoom mode.
2 guides
- Bird of Prey
In Majestic DLC matchmaking, perform 5 'airsassinations.'
2 guides
- Bullet Sponge
In Majestic DLC matchmaking, get the 'Close Call' medal twice during one match.
2 guides
- I See You!
In Majestic DLC matchmaking, kill 5 enemies while Promethean Vision is active.
2 guides
- Clever Girl
In Majestic DLC matchmaking, kill 5 enemies while Active Camo is active.
1 guide
- Flash of Light
In Majestic DLC matchmaking, get a Double Kill or higher with one Pulse Grenade.
1 guide
- Last Man Grinning
In Majestic DLC matchmaking, get 4 kills using the SAW without dying.
2 guides
- Pigs Can Fly
In Majestic DLC matchmaking, kill 3 enemies while they are using Jet Packs.
3 guides
- Callin' in the Big Guns
In Majestic DLC matchmaking, call in 3 ordnance drops during the same game.
7 guides
- I Thrust at Thee
In Majestic DLC matchmaking, perform a melee kill right after using Thrust Pack.
3 guides
- What Is Yours Is Also Mine
In Castle DLC matchmaking, disable a vehicle and then hijack it.
2 guides
- Dodge This!
In Castle DLC matchmaking, get two direct Spartan Laser kills in one match.
2 guides
- Hello Nurse!
In Castle DLC matchmaking, heal a near-death teammate with Regen Field 5 times.
7 guides
- That Won't Save You
In Castle DLC matchmaking, assassinate an enemy who is using a Hardlight Shield.
2 guides
- Ashes to Ashes
In Castle DLC matchmaking, disintegrate 6 enemies using Forerunner weapons.
7 guides
- Beating Up the Beat
In Castle DLC matchmaking, perform 5 melee kills in a single match.
3 guides
- Sight Seeing
In Castle DLC matchmaking, complete a match in any mode for each Castle map.
2 guides
- Scrapyard
In Castle DLC matchmaking, destroy 2 vehicles during a single game.
3 guides
- Outta My Way!
In Castle DLC matchmaking, kill 5 enemies during a match by running them over.
1 guide
- Protect This House
In matchmaking, assassinate the ball carrier within five meters of your own goal in Ricochet.
5 guides
- Hat Trick
In matchmaking, score three times in one round of Ricochet.
3 guides
- From Downtown
In matchmaking, score by throwing the ball from 30 meters in Ricochet.
4 guides
- Repeat Survivor
In matchmaking, survive three vehicle explosions in a row with the Survivor package.
7 guides
- Can’t Catch Me
In matchmaking, score a goal in Ricochet while taking damage with the Resistor active.
3 guides
- Just a Scratch
In matchmaking, recover full shields from low health with both Resistor and Recharge active.
5 guides
- Pitchin' a Tent
In matchmaking, effectively camp one location without dying for a full 60 seconds.
4 guides
- One Man Army
In matchmaking, get four consecutive kills with the Rocket Launcher without dying.
3 guides