Make sure you are outside then hold L and run you will run really fast then while doing this hold A and let go of only A not the L and don't stop running if done correctly you should fly through the air

Okay I found out this cheat when I didnt know what to put as my profile name, well all you have to do is start a new game and for your profile name put it as hcrayert (treyarch spelled backwards) and it starts you off with all the rewards and all you have to do is get 50,000 hero points to complete the game !! It takes a while but it's alot easier then doin the whole game. Remember have fun !!

To get infinate health type in LONGLSTING and you won't get hurt....