On the title screen, type "WIZARDOFSPEEDANDTIME". The border should flash.
Use the following keys on the keypad during the game:

'7'--Turn sprite collision off
'8'---Turn sprite collision on
'4'--------------Fire power on
'5'-------------Fire power off
'1'-------------Stop the timer
'2'------------Start the timer
'3'------------------High jump
'.'-------------Gives you keys

Left and right cursor keys control slow motion.