Tribal Trouble Tower Defence

Trouble is brewing in the tropical paradise once again... For reasons unknown, a gang of tribesmen have decided to waddle right across your well-kept little clearing in the jungle, and you have decided that you wont let them! You must stop the hordes of troublemakers by constructing a series of manned towers to defend your land against the uninvited disturbers.
Plan your defense carefully though, for a few surprises lie in wait in the bushes!