Ultimate Cheat:
Type yoyoyo in at order form.

Cheat codes:
itihfo - fight 3 rounds
erhne - fight all characters
aofreoio - opens all bonus doors
erhyhrly - makes toadman weaker
oaoaeioa - autofly mode in lab
eatee - morphing disabled
oivnnfof - tadpoles attacking in lab enabled.

Timothy Monzon

To get to the secret rooms in each level, change your weapon by pressing B+B, then do as follows for each room: Train Station: When you get there, whack the lantern with your weapon, then a suitcase will open. Go inside. Sewer: Whack the three sticks of dynamite then stand back. The cover will open for you to go inside. Abandoned Factory: Go all the way to the left, then whack the glass. Go into the opened pipe. Saw Mill: Use the weapon to press the button on the left. Then go into the opened hole. Boiler Room: Use your weapon to whack the mousetrap on the bottom level. Then go inside the dryer. Junk Yard: Use the weapon to operate the crane. Then go directly under the giant magnet. Toadman's lair: After you kill all the toads, whack the record player, and the Toadman will leave. The pipe organ should open up, revealing a secret entrance. You should follow this path, since this will be your last chance to get new ammunition or activate the special moves.

Knox Beasley

For invincibility in bonus rounds type: orufu For Z-axis movement type: xus_d3 For special move type: hnitoh-12