These are all of the cheat codes for the game that I was able to find while snooping around in the game executable:

BOSTON - Unlocks cheat menu.
Type it on the pause screen to enable, and type it again to turn it off.
The menu allows you to watch any of the Cinematics, and you can jump straight to any level you want, even the bonus ones!
The word is based on "Boston Animation" which was the company that made the game.

Type the following slowly into the level selection menu (the one on the title screen, not the cheat menu):
SIMON - Unlocks all Level 1 Zones (Same as RED)
RED - Unlocks all Level 1 Zones (Same as SIMON)
YELLOW - Unlocks all Level 2 Zones
GREEN - Unlocks all Level 3 Zones
BLUE - Unlocks all Level 4 Zones
CHOCOLATE - Unlocks all Level 5 Zones
PEANUT - Unlocks all Level 6 Zones
ALMOND - Unlocks all Level 7 Zones
CRISPY - Unlocks all Level 8 Zones
BUTTER - Unlocks all levels

If you create a new player with the name "Maxim Novikov" then all the levels will already be unlocked! This is actually the name of one of the developers who goes by Max Nova in the credits. I found this at the end of a list of bad words that you can't name a player as. There's 16 bad words (no I won't list them here).

Thanks, I've been curious about the game's cheats since finding another forum post on the BOSTON cheat. This should be useful for single stage runs w/out beating the game again if starting from scratch. That is if and when I'll run this game

Yeah I made the other thread about the BOSTON cheat but deleted it so that I could make this one since you can't edit thread titles. Also, I just found a player name cheat that I've added to the list.