Be Superhero Guy
Go to the options screen and select Jukebox and play tunes 1, 3, 5, 6, 3, 9, 6, 4, 9, 5 and press Start. Then play the game and pause it. Now press A, C, B, B, A, C, C, A, B, A, L, R, R, A, B, B, C, L, U, D, A then unpause and you will transform into the superhero guy. Note you must do this code EXTREMLY FAST or it will not work.
Bonus Weapon
If you hold the A button, Sketch will rip a piece out of the comic and create a paper airplane. Be careful! This weapon will destroy almost anything, but takes a bit of your lifebar with it.
Controlled Evolution
In Episode 1, near the dragon, there are cells full of liquid. When the liquid escapes, it forms new creatures. To control which species evolve, go to the oozing liquid, and hold the d-pad left or right (depending on which creature you want) and hold A until the transformation is complete. Note: There are only two species from which to choose.
Invincibility
At jukebox go to and press C on these numbers. 3,12,17,2,2,10,2,7,7,11.
Level Select
On the Jukebox screen, press C on sounds 14, 15, 18, 5, 13, 1, 3, 18, 15, 6. A voice should say "Oh Yeah!" To choose your level, set the sound to the level you want and press C. i.e, to play on level 5, set sound to 5 and press C.
Saving Alissa Cyan
To save Alissa Cyan and get 100% progress, do the following: Fight Mortus. There is a rocket launcher and a switch. Each time you flip the switch, fire comes out of the rocket launcher. Let the fire burn Mortus 5 times and he will die! Kill the other creeps and a switch will appear. Flip that switch and Alissa will jump out. Get ready for a different ending!
Secret Rooms
In episode 2, first page, after you beat the the skull on a stick and go down, kill the only creep in that room. After doing this, stay in the room and read the thought balloons for Sketch. He will say that the far wall looks weak, then walk over and punch it. The wall will break and you will be able to go in and find a health bottle, a knife, and a power fist. When you get to Episode 3, drop off Roadkill the Rat in the first room of the cave in the lower left hand corner. A secret room should appear after you have killed everything in this room.
Unlimited Power Punches
Go to the Jukebox and press "C" on sounds 1, 6, 17, 19, 1, 3, 3, 7, 6, 1.
View Credits
On the Options screen hold A + B + C and press Start.