If you want to go Pink Mohawk, you could also use the A-Team as a model.

Other Movies for inspiration:
Predator --> What's hunting me in the jungles of Amazonia?
Avatar-->not the offworld setting, but the layout and function of RDAs military base; sub all the alien flora fauna with earth based equivalent....well I think some giant cat beasts would be fine....
The Dirty Dozen-->Mercs with a dirty past; aka "Oh why oh why do I have a Kindbomb in my head?"
The Rock-->Not in the jungles; but the premise of having to hold a location (an island in this case) would work as at least a run or three.
Apocalypse Now-->I love the smell of napalm in the morning!
Blood Diamond-->Haven't seen it, but looks like it might fit
Serpent and the Rainbow-->Shedim anyone?

Allan Quartermain and the Lost City of Gold-->Oh, come on! It's your comic mission break run!

And the game Serious Sam-->Another Pink Mohawk option!