>>717323256
I'm pretty shit at platformers, but I had no trouble getting 102% in DKC2 on hardmode (no barrels), or 105% in DKC3 ("TUFST" mode). Last time I had played the games was 25 years ago.
Animal Antics, especially without barrels, is a bit of an assfuck but that's about it

>>717324598
Alternatively with RetroArch you can enable Hardcore Mode which disables save states and slowdown entirely. Forces you to play games as intended.
I know it sounds retarded, but the Retro Achievements for DKC2 are incredible too. They added so much replay value and extra challenge + flair to an already amazing game.