Set 100 enemies on fire with powers.

Visit a store in the single-player campaign.

Modify a weapon.

Start a character in multiplayer or customize a character in single-player.

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Defeat 30 enemies with the PAK-80

Defeat 30 enemies with the M9

Defeat 30 enemies with the Arm Micro

Defeat 30 enemies with the KAL 7

Make five enemies drop their grenade by shooting them

Defeat 20 enemies with headshots

Find one treasure

Followed the story to its conclusion.