Contra achievements

7.84%
Bulletproof
Complete the game in Arcade mode using only 1 credit.
10.78%
Partnership
Complete the game in Xbox Live Co-op mode.
14.71%
Full Assault
Complete the game in under 12 minutes.
15.69%
Proficient
Complete the second tunnel with a score of 100,000 or more in Arcade mode.
23.53%
Team Work
Score 100,000 points in an Xbox Live Co-op game.
25.49%
Well Equipped
Collect 3 different weapons in the second tunnel.
31.37%
Tough Guy
Get to the second tunnel without obtaining a single weapon upgrade.
34.31%
Tunnel runner 2
Beat the second timed tunnel with 55 seconds or more left.
66.67%
Untouchable
Get to the first tunnel without losing a life.
68.63%
Infiltration
Destroy the alien tower at the end of the water level.
70.59%
Tunnel runner 1
Beat the first timed tunnel with 33 seconds or more left.
90.20%
Armory
Collect 4 different weapon power-ups.