SZVPTOVK Can't lose lives in roomsSZUPLOVK Can't lose lives in elevator shaftPENPIALA Start with 1 lifeTENPIALA Start with 6 lives PENPIALE Start with 9 livesNYSXAOAN Oxygen used up more slowly in shaft AYXXSNNY Oxygen used up more quickly in roomsAAEPZIPA Won't take damage from shots and collisions VTNSEXSX Infinite bombs in elevator shaftVVVSXXSX Infinite bombs in rooms VVOSSXSX Infinite detonators in shaftsVTESNUSX Infinite detonators in rooms VTEZIKSX Infinite keys in shaftsVVOXTOSX Infinite keys in rooms OZEPOISE + IAEPXSVI Start on level 5 OZEPOISE + ZAEPXSVS Start on level 10OZEPOISE + YAEPXSVS Start on level 15OZEPOISE + GPEPXSVI Start on level 20