to fight worm, get dumpster, three groupies(preferably) and dumpster dive, a video will play, and a sign will pop out of the ground. jump, the dumpster dive, and youll go into the tunnel, us bat to hit bombs at worm. to fight monkey, buy three groupies and helmet( preferably), get golden cart and hang glider, then jump, and hanglide and the monkey will be in a gorrila balloon, there are bombs on clouds. hit bombs and clouds at monkey
For the last level, I built mostly drones. and maybe 4-5 mortar. But you can beat the last level with only drones. Just spam the 3 spawn points with drones until you can build relays. Keep building reactors and collectors until your energy is up to like 12-15 collection rate.