Revenge of Edzilla level:
Collect all the Edzilla pieces in the first three sandboxes.

Rebel Robot Ranch level:
In Scams 4, 5, and 6, dig a hole in the sandboxes.

Cheat mode:
Get a 100% game completion by collecting all the jawbreakers. The "Unlimited Stealth", "Unlimited Damage", and "Fast Run" cheat options will now be unlocked.