Could use an INSTAKILL cheat and an NOCLIP cheat,
god the explosives storage area where you need to get on an elevator is an absolute nightmare, and since sprinting makes the entire thing into an ice level; yikes.
The only thing that comes in second is Residue Processing; what starts off as a slow fun way to get your basic weapons back turns into a maze with slip and slide controls, and an unforgiving trek back up if you miss a very slim column, which I guarantee going into the game blind you will slip and slide off of cause a grinder in front of you is forcing you into panic mode.
Residue Processing was so unnecessary I felt my frontal cortex being microwaved, so an NOCLIP fly mode without the use of consoles? Yes, absolutely something I’d approve.