Here are some cheats and tips for the game Contra: The Alien Wars.
017-97B-E6A Start with Flame Thrower
077-97B-E6A Start with Crush Gun
087-97B-E6A Start with Homing shot
097-97B-E6A Start with Spread shot
052-B1B-E6E Get 5 smart bombs after you die
092-B1B-E6E Get 9 smart bombs after you die
007-E2C-19E Infinite smart bombs
010-6FB-7FB Don’t flash after getting hit
FF0-6FB-7FB Flash longer after getting hit
3EB-81B-4CA Invincible