Complete the following tasks to earn the desired achievement. Note that these only work on the PC version; they will NOT work in the Xbox version.
| Unlockable: | How to unlock: |
| (Campaign level goes here) (30 each) | Complete each level (seperate achievements) on Normal, Heroic, or Legendary. There are 13 levels (not counting tutorial) for a total of 390 points. |
| Warrior (100) | Complete the game on Normal difficulty |
| Hero (50) | Complete the game on Heroic difficulty |
| Legend (50) | Complete the game on Legendary difficulty |
| King of the Scrab (20) | Aquire the Scrab gun on the Metropolis level |
| Slient but Deadly (20) | Kill 7 enemies in a row without being spotted |
| Demon (25) | Complete any level without dying. The tutorial level does not count. |
| Go Ape Shiv (20) | Kill an enraged, berserk Brute by melee |
| Stick It (5) | Stick an opponent (MP) with a plasma grenade and blow them up |
| Counterpoint (5) | Kill the sword carrier |
| Carjacking (5) | Steal an occupied vehicle from an opponent and take it over |
| Violent Cartographer (25) | Play every default map and stay in the game until it's over |
| Rainman (25) | Play every game variant, with at least 3 other players, until the end of the game |
| Double Kill (20) | Kill 2 opponents within 4 seconds |
| Triple Kill (20) | 3 opponents |
| Killtacular (20) | 4 opponents |
