ENERGISER

The hard one. Finish Insane without ever reloading a camera battery - so the whole game on your starting charge, never once hitting reload. The battery only drains while night vision is up, so play with the camcorder DOWN wherever there's any ambient light and only raise night vision in true pitch-black. Picking spare batteries up is fine (it's the reload action that voids it) - you just never use them. Do this and LUNATIC and PUNISHED come in the same run.