Find 20 treasures

Defeat 50 enemies with hand-to-hand combat

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

Defeat 20 enemies with hand-to-hand combat

Defeat three enemies with one explosion

Finish the game with the same partner for the majority of the journey and return to the beginning.

Start the journey again after a week long break.

Finish the game in Crushing Mode

Finish the game in Hard Mode

Find 50 treasures

Find 40 treasures

Kill 10 enemies with grenades by aiming while hanging from a ledge

Kill 20 enemies with the Wes - 44