30 lives:To get 30 lives, at the title screen press Up(2), Down(2), Left, Right, Left, Right, B, A.Easy “Tunnel Runner” achievement:Get to the last station before the end and wait for time to expire. You will die and the clock will reset and you will easily make the time requirement.Achievements:ACHIEVEMENT – HOW TO UNLOCKArmory (10 points) – Collect all different weapon power-ups.Team Work (10 points) – Score 100,000 points in an Xbox Live Co-op game.Untouchable (10 points) – Get to the first tunnel without losing a life.Tunnel runner 1 (10 points) – Beat the first timed tunnel with 33 seconds or more left.Infiltration (15 points) – Destroy the alien tower at the end of the water level.Tunnel runner 2 (15 points) – Beat the second timed tunnel with 55 seconds or more left.Well Equipped (15 points) – Collect three different weapons in the second tunnel.Tough Guy (20 points) – Get to the second tunnel without obtaining a single weapon upgrade.Proficient (20 points) – Beat the second tunnel with a score of 100,000 or more in Arcade mode.Partnership (20 points) – Beat the game in Xbox Live Co-op mode.Bulletproof (25 points) – Beat the game in Arcade mode using only 1 credit.Full Assault (30 points) – Beat the game in under twelve minutes.