People seem to think the final boss is impossible, if your open for a hint, i cleared it by using Gun Spawn perk and hoping to get Shotguns or Snipers i immediately went to the lower platforms to get close to him and when i saw an opening, fire and run to not get caught on bullets before he fell off. Hope it helped
 "Gun Mayhem"){kind=icon}
 "Elephant Quest"){kind=icon}
 "Jacob and the Gyrocopter"){kind=icon}
 "Creeper World Training Sim"){kind=icon}