Survive 10 explosions in multiplayer.

Revive a teammate in a multiplayer match.

In multiplayer, be the only player on your team that isn't dead or downed.

Complete the game.

Complete all challenges.

Kill 40 enemies with the shotgun.

Find 75% of GPS caches.

Purchase all skills in all categories.

Complete one challenge.

Kill 75 enemies with the rifle.

Kill 35 enemies with the pistol.

Purchase all skills in one category.