The third level in the game, and it's quite a straightforward one, As long as you make sure you're giving the monkeys bananas when you see them so you get wrenches and keys.
I personally found the enemies to be a bit tough in this level, due to their swords. However, I still recommend just flying into them punching as fast as you can.
A few people I know have gotten stuck on the bit with the green 'ball'. All you have to do is go to the left of it and attack it!
With that in mind, this level should pose no problems to you.