This is a very short chapter, though if you go for the two challenges, it will feel much longer.
The boss of the level is a rhino. It is heavily armored and will try to run Monkey over with it's charge attack. Monkey can use his cloud here, but I don't recommend it. I found that it is easier to consistently doge by using left-stick + A.
After dodging 3 times, Pigsy will start throwing bombs down. Shoot them with you plasma blast when the Rhino is near them. If the Rhino is on it the bomb, it's charge will be derailed. After getting it's health to 50%, Pigsy will knock a burner down. Lure the Rhino into charging the burner. You will have to shoot down the next burner, 2 supports then another when it falls some. The 3rd and final burner requires Monkey to climb up and push it down.
A little later, the Rhino will go charging off with Trip on it's back. You need to catch up to it and get her off of it before it crashes into a pile of explosive material.
Other things to do: