Actually, I just realised the infra-red goggles and the headlamp are two different things. The goggles (F2) seem a bit useless, but the headlamp (F5) is pretty useful.
Then there’s the ice cleats and the gas mask and probably some more items I haven’t gotten yet, all activated by the function keys. So annoying when you’re fumbling to turn the right one on while you’re being chased by a Dark Trooper or something!
