Complete any level of the game.

Complete the game.

Complete every level in the game on Hard.

Complete a level without dying.

Collect all of the intel in a single level.

Collect all of the intel in the entire game.

Get full destruction on a level.

Complete a secondary objective.

Complete all secondary objectives.

Kill a flame thrower guy with a flame thrower.

Complete a level using only the machine gun.

Complete a level without firing a single shot.