Pause the game, select "Options", then "Cheats". Enter one of the following case-sensitive codes to activate the corresponding cheat function.

Invincibility
Enter "everythingproof" as a password.

Infinite Ben10 Alien's energy
Enter "generator" as a password.

Full upgrades
Enter "herotime" as a password.

All ten aliens after Ben loses all aliens
Enter "primus" as a password.

Advance to next level cutscene
Enter "portal" as a password.

Big Smoothy
Enter "xlsmoothy" as a password.

Toggle HUD health and energy display
Enter "hud" as a password.