Both players must complete level 1 without losing lives in an Xbox Live CO-OP game.
Both players possess a Spread Gun at the same time at some point in the game.
Complete level 1 in less than 3 minutes.
Complete level 2 while playing an Xbox Live CO-OP game.
Score 300,000 points in an Xbox Live CO-OP game, while still alive.
Destroy the helicopter without dying once.
Reach level 2 with a score of 100,000 or more.
Complete the game using only 1 credit.
Complete level 3 in Single Player or Multi-Player mode.
Complete level 4 in Single Player mode.
Complete level 5 in Single Player or Multi-Player mode.
Collect 5 different weapon types.
