After clearing the game and watching the closing credits, wait around on the screen that says "The End." After you have waited long enough, the word "Cheat" will appear and then you can begin playing a mini-game.
Type these cheats in the menu:
gimmielumz You will get 5 additional lumz.
globoxrules (during gameplay) All Powers
glowfist (when paused) Charge Shots
Get Full Health
Go to MENU and type in gimmelife. A cheer will come on. Return to game and health will be on full.