Defeat five Riot Shield enemies by running over their shield

Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)

Complete the game on Poozer or Enforcer difficulty.

Clear Mission 9.

Gain experience level 10.

Clear Mission 8.

Purchase all Construct upgrades.

Clear Mission 6.

Defeat 30 enemies with the G-MAL

Complete one Cooperative Multiplayer game

Defeat 30 enemies with the Mk-NDI

Make five enemies drop their grenade by shooting them