Commander Keen 6
ALT-2-ENTER: enables cheat mode.
F10-D
records a demo, press + to save it.
F10-E
completes level.
F10-G
toggles invulnerability
F10-I
grants full ammo, all keys and items.
F10-J
press mouse button to fly.
F10-W
warp to any level.
F10-Z
reveals hidden areas.