- And the knockout punch
Complete Under the Dark
1 guide
- Fifth floor: Tools, Guns, Super Weapons
Complete The Foundry
1 guide
- Sentinel size matters
Complete The Halo
1 guide
- Last stop, this town
Complete Last Stand
1 guide
- Learn the ropes
Complete the Basic standalone tutorial
1 guide
- Know the ropes
Complete the Advanced standalone tutorial
1 guide
- Two heads are better than one
Complete a mission in co-op
2 guides
- The hard fight
Complete the Campaign on Heroic (original campaign)
1 guide
- Surviving the long war
Complete the Campaign on Legendary (original campaign)
2 guides
- Palmer's Pure Gold
Earn a gold medal on every mission (except Prologue) on any difficulty (original campaign)
1 guide
- Gold rush
Earn a gold medal on any mission (except Prologue) on any difficulty (original campaign)
1 guide
- Lone Wolf
Complete any solo mission on Legendary (except The Signal) with all skulls on (original campaign)
1 guide
- Comrades in arms
Earn a gold medal on any mission (except The Signal) in Co-op on Legendary (original campaign)
3 guides
- A little bit extra
Complete half of the Campaign bonus objectives (original campaign)
1 guide
- A lot extra
Complete all the Campaign bonus objectives (original campaign)
1 guide
- Alas, poor Yorick!
Collect a Skull (original campaign)
1 guide
- Morbid curiosities
Collect half of the Skulls (original campaign)
3 guides
- Collecting a dream
Collect all the Skulls (original campaign)
5 guides
- The Scrappy Six
Complete a Multiplayer match as each of the 6 launch leaders (Matchmaking only)
3 guides
- First steps
Complete a Multiplayer match (Matchmaking only)
1 guide
- Natural intelligence
Play a Skirmish match alone against only AI opponents (1 or more)
3 guides
- Two heads are better than none
Win a Skirmish match with a friend against only AI opponents (2 or more)
1 guide
- You've got a case of the Birley
In a 1v1 Skirmish against Legendary AI, recycle your base in the first 5 minutes and then win
9 guides
- The rank and file
Recruit or construct 1 of each UNSC unit in Multiplayer or Skirmish (Launch units only)
2 guides
- The tribe
Recruit or construct 1 of each Banished unit in Multiplayer or Skirmish (Launch units only)
1 guide
- Trash compactor
Destroy 100 vehicles with anti-vehicle units (Multiplayer, Skirmish or Blitz)
2 guides
- Flyswatter
Destroy 100 air units with anti-air units (Multiplayer, Skirmish or Blitz)
3 guides
- Meat grinder
Kill 100 infantry with anti-infantry units (Multiplayer, Skirmish or Blitz)
2 guides
- Spare change
Spend 5 Leader Points in Multiplayer, Skirmish or Terminus Firefight
2 guides
- Big Spender
Spend 100 Leader Points in Multiplayer, Skirmish or Terminus Firefight
1 guide
- Space Healer
Cast 100 Healing Leader Powers (Multiplayer, Skirmish or Blitz)
5 guides
- Overkill
Destroy 500 units with Leader Powers (Multiplayer, Skirmish or Blitz)
2 guides
- The hand that feeds
Kill a unit owned by a developer or someone who has this achievement
2 guides
- Making the most of the day
Complete 3 Daily Challenges in one day
1 guide
- A strong showing for the week
Complete a set of 3 Weekly Challenges in one week
1 guide
- Short-term commitment
Complete at least 1 Daily Challenge each day for a week
2 guides
- Long-term commitment
Complete at least 1 Weekly Challenge each week for a month
2 guides
- Duellist
Win your first Blitz match (Matchmaking only)
1 guide
- Ante-up
Complete the Blitz tutorial
1 guide
- Card shark
Complete 25 Blitz matches (Matchmaking only)
1 guide
- Full house
Complete Blitz matches as each of the 6 launch leaders (Matchmaking only)
2 guides
- All or nothing
Play all cards in your deck at least once in a single Blitz match
3 guides
- Stacked the chips
Gather 150 Energy Crates over any number of Blitz matches
2 guides
- Jackpot
Play 777 total Blitz cards over any number of matches
1 guide
- Firefighter
Beat wave 10 in Blitz Firefight
3 guides
- On fire
Score 500,000 points in a single Blitz Firefight
3 guides
- Paint it red
Achieve the highest possible kill-streak in any Blitz mode
3 guides
- Spreading Darkness
Win 3 matches as Voridus (Multiplayer, Skirmish or Blitz)
1 guide
- Cataclysmic
Kill 50 units with Cataclysm (Multiplayer, Skirmish, or Blitz)
2 guides
- Revel in Destruction
Use Invigorating Frenzy 50 times
1 guide
- Unbreakable
Win 3 matches as Pavium (Multiplayer, Skirmish or Blitz)
2 guides
- Marked for Death
Paint units using Pavium or Orbital Designator 30 times (Multiplayer, Skirmish, or Blitz)
1 guide
- The Long Game
Kill 50 units with Mega Turrets (Multiplayer, Skirmish, or Blitz)
1 guide
- Smash!
Gain a gold medal and complete all objectives in ‘What Could Go Wrong?’
2 guides
- Serving a New Master
Complete 'What Could Go Wrong?' on any difficulty
1 guide
- Hold the Line(s)
Gain a gold medal and complete all objectives in ‘Fighting Retreat’
3 guides
- The Wave Breaks
Complete 'Fighting Retreat' on any difficulty
1 guide
- Hidden Power
Gain a gold medal and complete all objectives in ‘Light the Fuse’
2 guides
- Tapped
Complete 'Light the Fuse' on any difficulty
1 guide
- We Got This
Reach the final room of The Archive without calling in reinforcements from the teleporters.
2 guides
- Nimble, for a Big Fella
Navigate the laser defenses in The Archive without losing any units on Heroic or above.
3 guides
- Have You Tried Rebooting?
Complete 'The Archive' on any difficulty
1 guide
- Before This Gets Out of Hand
Complete 'Manifestation' without the Proto-Gravemind exceeding 50% critical mass
2 guides
- Clean up your Mess
Complete 'Manifestation' on any difficulty
1 guide
- Banished Prowess
Beat any level on legendary in par time with a scoring skull active (AtN only)
3 guides
- The Brute Side
Collect every Phoenix Log collectable in 'Awakening the Nightmare'
1 guide
- Awake
Complete the 'Awakening the Nightmare' campaign on any difficulty
- Again with the Tentacles
Complete the 'Awakening the Nightmare' campaign on Heroic or higher
- The Ancient Enemy
Complete the 'Awakening the Nightmare' campaign on Legendary
3 guides
- Watch My Six
Complete wave 20 in co-op as a UNSC/Banished partnership (Terminus Firefight)
1 guide
- Outflood the Flood
Build and hold a minibase on every slot of a map at the same time (Terminus Firefight)
1 guide
- Ka-Ching!
Destroy 20 bonus drops in a single game (Terminus Firefight)
1 guide
- High Maintenance
Build 50 barricades in a single game (Terminus Firefight)
1 guide
- Turret Farmer
Build 50 turrets in a single game (Terminus Firefight)
1 guide
- Pristine
Prevent the Terminus from taking any damage for 15 waves (Terminus Firefight)
2 guides
- Walled In
Have a wall built on every plot of the map at the same time (Terminus Firefight)
2 guides
- Survivor
Finish wave 5 without training additional units (Terminus Firefight)
2 guides
- Terminus Defender
Get an individual score of 500,000 (Terminus Firefight)
1 guide
- Terminus Tactician
Get an individual score of 1,000,000 (Terminus Firefight)
1 guide
- Terminus Teamwork
Get an total score of 2,000,000 (Terminus Firefight)
1 guide
- Terminus MVPs
Get an total score of 5,000,000 (Terminus Firefight)
2 guides
- Garrison
Finish wave 10 (Terminus Firefight)
1 guide
- Fortress
Finish wave 30 (Terminus Firefight)
1 guide
- Barricade
Finish wave 20 (Terminus Firefight)
1 guide