- Silent but Deadly
Kill 7 opponents from behind in a row without being spotted, any level, any difficulty
14 May 2014 - 3 guides
- Legend
Complete the game on Legendary difficulty
14 May 2014 - 3 guides
- Hero
Complete the game on Heroic difficulty
- Warrior
Complete the game on Normal difficulty
14 May 2014 - 2 guides
- The Great Journey
Complete The Great Journey at Normal, Heroic, or Legendary
- High Charity
Complete High Charity at Normal, Heroic, or Legendary
- Uprising
Complete Uprising at Normal, Heroic, or Legendary
- Gravemind
Complete Gravemind at Normal, Heroic, or Legendary
- Go Ape Shiv
Kill an enraged, berserk Brute by melee, any level, any difficulty
- Quarantine Zone
Complete Quarantine Zone at Normal, Heroic, or Legendary
- Sacred Icon
Complete Sacred Icon at Normal, Heroic, or Legendary
- Regret
Complete Regret at Normal, Heroic, or Legendary
- Delta Halo
Complete Delta Halo at Normal, Heroic, or Legendary
- Oracle
Complete The Oracle at Normal, Heroic, or Legendary
- The Arbiter
Complete The Arbiter at Normal, Heroic, or Legendary
- Demon
Complete any campaign level without dying once on Normal, Heroic, or Legendary
25 March 2013 - 4 guides
- King of the Scarab
Acquire the Scarab gun on the Metropolis level, any difficulty
25 March 2013 - 3 guides
- Metropolis
Complete Metropolis at Normal, Heroic, or Legendary
- Outskirts
Complete Outskirts at Normal, Heroic, or Legendary
- Decorated Soldier
Get awarded at least 8 different medals in one non-team game
27 January 2013 - 2 guides
- Rainman
Play every available game variant, with at least 3 other players, to the end of each game
27 January 2013 - 3 guides
- Violent Cartographer
Play every available default map and stay in each game until it’s over
27 January 2013 - 2 guides
- Cairo Station
Complete Cairo Station at Normal, Heroic, or Legendary
- Skewer Stopper
Kill the sword carrier after they kill 5 or more times in a row with the sword
- Air Traffic Control
Blow up the Banshee in flight while manned, with grenades or the rocket launcher
18 October 2009 - 2 guides
- Ninja
In a non-team game, kill 5 people by melee, from behind
- Killtacular
Kill 4 opponents within 4 seconds
04 July 2009 - 2 guides
- Stick It
Stick an opponent with a plasma grenade and blow them up
- Running Riot
Kill 10 opponents in a row in the same game, without dying
03 July 2009 - 2 guides
- Assassin
Melee an opponent from behind
- Counterpoint
Kill the sword carrier
- Triple Kill
Kill 3 opponents within 4 seconds
- Killing Spree
Kill 5 opponents in a row in the same game, without dying
- Vigilante
Stop a Killing Spree of another player
- Carjacking
Steal an occupied vehicle from an opponent and take it over
- Double Kill
Kill 2 opponents within 4 seconds
- Roadkill
Run over, hit and kill an opponent with a vehicle
03 July 2009 - 2 guides
- Bonecracker
Hit and kill an opponent with a melee attack
03 July 2009 - 2 guides
- Hired Gun
Kill an opponent who has the Legend achievement
03 July 2009 - 2 guides
- Sniper Kill
Kill an opponent with the sniper rifle or the beam rifle
- Flaming Ninja
Kill an opponent that has the Ninja achievement
03 July 2009 - 2 guides