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Armory

10
Collect 4 different weapon power-ups.
Tunnel runner 1

10
Beat the first timed tunnel with 33 seconds or more left.
Infiltration

15
Destroy the alien tower at the end of the water level.
Untouchable

10
Get to the first tunnel without losing a life.
Team Work

10
Score 100,000 points in an Xbox Live Co-op game.
Tunnel runner 2

15
Beat the second timed tunnel with 55 seconds or more left.
Tough Guy

20
Get to the second tunnel without obtaining a single weapon upgrade.
Well Equipped

15
Collect 3 different weapons in the second tunnel.
Proficient

20
Complete the second tunnel with a score of 100,000 or more in Arcade mode.
Bulletproof

25
Complete the game in Arcade mode using only 1 credit.
Full Assault

30
Complete the game in under 12 minutes.
Partnership

20
Complete the game in Xbox Live Co-op mode.
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