I can't even capture it on my camera

Defeat ten enemies using hand-to-hand combat on the back of the convoy trucks

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

Find 40 treasures

Defeat ten enemies with propane or acetylene tank explosions

Completed the mission "The Once and Future Slab"

Takedown 50 Cops

Be named Player of the Game (in an NBA game) in MyCAREER mode.

Play in the swimming pool on the Cruise Ship

Throw back a grenade and defeat two enemies at once

Tipped Moxxi $10,000

Record two double doubles with any teammates in the same non-simulated game.

Purchased 5 items from the black market