SOMES CHEATS
Apollo-all - the enemies have explosives
Arnold - hit hard
Gump - faster walking
hop - big jump
newyorkminute - infinite bullet time
armstrong - extra range
guide - laser sight
Willis - Unbreakable
flcl - Infinite ammo

But please also take into consideration that being the brilliant game that it is, it's 2.7 MB in size and will take time to load, sometimes problems occur and a simple refresh is required.