After a few trys i got it, blue was creepin towards me but was being beatin by green so i signed a pact with them, they got taken out, i took out purple, then over seas and bye bye green. I own world, woot!
don't kill milo to get the green tube, shoot him, give the tube to the scavanger to get the bomb, kill the worm with it, then walk back in to the lobby and the robot kills you, mission failed.