Alienators: Evolution Continues Cheats (GameBoy Advance)

Level 2: MDKMZKCC
  Level 3: BHSZSKTC
  Level 4: ZKTSHKMC
  Level 5: JLPFDKHB
  Level 6: HMDBRKCB
  Level 7: GLDKLKZB
  Level 8: GLPKLKRB
  Level 9: GLDJBKKF
  Level 10: GLPJBKFF
  Level 11: GLDKBKZF
  Level 12: GLPKBKRF
  Level 13: GLDJLKHD

Go to the continue menu and enter GLDJKHDM. When you enter the level, monsters will fall
off the screen or run in place when you approach them.

To have unlimited ammo, enter RBJPXCKC as a password.