Super Ghost & Ghouls (SNES)
Ghouls' Ghosts (Megadrive)
This is when platform games were actually done professionally and it shows.
These two examples just happen to be almost impossible though, probably impossible for gamers nowadays.
Buy a copy of each , download an emulator for each and see how hard you are!
Super Ghouls & Ghosts on the SNES was rock hard
Ghouls & Ghosts on the Arcade or Megadrive was a breeze