Bust 10 drug dealers

Achieve Level 5 Evil Karma

Destroy half the D.U.P. security cameras

Defeat 10 enemies by detonating ammo crates

Clear the D.U.P. completely out of a district

Disrupt 10 activist rallies

Finish off 10 wounded enemies or civilians

Kill a total of 100 enemy worms.

Complete "Meat in the Middle".

Kill 4 worms in a single turn.

Kill a total of 10 enemy worms.

Completed the "Sub-Level 13" missions with 3 other players.

While airborne, spun 360 degrees then got a kill with a Sniper Rifle without using the scope.