Cheat mode
At the cheat codes screen at the options menu to unlock all cheats, enter (I WANT IT ALL)
Empty Superpower meter
At the cheat codes screen at the options menu, enter (JOR EL)
Disable time limits
At the cheat codes screen at the options menu, enter (STOP THE CLOCK)
Slow-motion mode
At the cheat codes screen at the options menu, enter (SLOW MOTION)
Reversed controls
At the cheat codes screen at the options menu, enter (SUPERMAN)
Unknown
At the cheat codes screen at the options menu, enter (FEATURE)