Shift/Biomenace-enables cheats
Bioe-gives you full energy and 1 extra life
Biog-gives you 5 grenades of each type
Biol-gives you 10 land mines
Bioi-gives you invulnerability
Biom-makes all monsters on that stage dissapear
Biow-gives you access to pick level on options
Biol-warps you to the next level