Fuji
I can remember on one type rating renewal for fun I was flying an approach! In the approach to an ILS engine fire! One engine instrument approach, then bad turbulence, Then autopilot and FD Failure.
On the ILS the cloud was at minima for the ILS.
Halfway down FOG!
Ok checked fuel divert
" Now check fuel" I was told 300 ibs per side no fuel to go anywhere but land.
Completed a hand flown ILS on one engine to land in zero zero conditions.
OK this was a fun challenge at the end of a session but???
Its not so much about flying to IR tolerances but having the mental capacity to pick up your game as needs be and not freeze like a zombie
As stated things do fail! engines, autopilots smoke in cabin (Yes had that too at night) Its easy to fly an all working plane with a Christmas tree display and fantastic autopilot its when things go wrong in IMC that we are seriously challenged as those problems do become 10 times worse.
I right seated a pilot once who had panic attacks in cloud yet held an IMCR
But maybe I am wrong
Pace