Ok here's how to beat the second boss. First when you land in the swamp
thingy the nanobots form together. Anyways the only way to kill him is
to shoot any rang at his mouth when it opens. When you get half way to
beat him he turns into a ball but when he collapses run cause he can
spike you from under. When he is in ball mode you can't hurt him so
watch out and try hard not to get crushed.