Correctly answer all questions in a multiplayer round with all players

Play 20 singleplayer games

Correctly answer ten questions in a row

Finish the game in Crushing Mode

Kill 50 enemies in a row without dying

Find 50 treasures

Kill 30 enemies with the M79

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

Kill five enemies in a row with a single punch, after softening them up with gunfire

Finish the game in Normal Mode

Kill 50 enemies with the M4

Kill 30 enemies with the Dragon Sniper