Protection from enemy bullets - SZXZONSE

Protection from collisions - SZSZKXSE

Protection from "electric grids" - SXSATXSE

Start with 1 life - AEXILGZA

Start with 100 lives - GVXILGZA

Each Backpack Energy Capsule counts as two - GAVXVLZA

Each Backpack Energy Capsule counts as four - AAVXVLZE

Invincibility lasts until next stage - AAKOPIZA

Start with 7 Backpack Energy Capsules instead of none - GEOSPKVN

Start game with 3 life increments instead of 8. - GEOSTKTA

Continue game with 3 life increments instead of 8. - GASOTOTA

Infinite lives - SZXSZSVK

Don't get stunned when hit - GXEUIOSE

Stand your ground! - AEUUAPGA + GXKLAOKE