This one is different than normal, their is lots of hidden chompers, don't worry, it will be quite easy to spot where they are.
There is also a couple tips if you get stuck:
You can sometimes go right through the chomper closest to the bottom.
Good luck! You will need it.You can not get to the exit to the right (I think).
EDIT: If their is no such thing as a cyan gate in this level then redownload it.