Complete each achievement to get the allotted gamerscore. The numbers between the () is the points given for each achievement.
|Achievement||How to unlock|
|Armory (10)||Collect 4 different weapon power-ups.|
|Bulletproof (25)||Complete the game in Arcade mode using only 1 credit.|
|Full Assault (30)||Complete the game in under 12 minutes.|
|Infiltration (15)||Destroy the alien tower at the end of the water level.|
|Partnership (20)||Complete the game in Xbox Live Co-op mode.|
|Proficient (20)||Complete the second tunnel with a score of 100,000 or more in Arcade mode.|
|Team Work (10)||Score 100,000 points in an Xbox Live Co-op game.|
|Tough Guy (20)||Get to the second tunnel without obtaining a single weapon upgrade.|
|Tunnel runner 1 (10)||Beat the first timed tunnel with 33 seconds or more left.|
|Tunnel runner 2 (15)||Beat the second timed tunnel with 55 seconds or more left.|
|Untouchable (10)||Get to the first tunnel without losing a life.|
|Well Equipped (15)||Collect 3 different weapons in the second tunnel.|
After choosing Arcade mode, enter the famous Konami code and start the game in order to start and continue with 30 lives.
When you use this code, your score is not eligible for the High Score Leader Board.
Start game with 30 lives - Up, Up, Down, Down, Left, Right, Left, Right, B, A