Kill Algo:
On the last mission, when you have to fight Algo, to kill him quicker aim for the muzzle when he fires then move up slightly and fire. This will kill him faster.

Level select:
Select the "Profiles" option at the main menu. Highlight the option for "Jasmine Curry" then hold L + R + Y + X. You will be returned to the main menu, and a "Levels" option will now appear. Note: You will not be able to save the game while this code is enabled