Getting good is like being a tiger, playing with your prey and humiliating it before the kill.

Dracula XX and Bloodlines: singe life clear (best I did was getting 2 or 3 times only in the entire games)
Shadow Warrior/Duke Nukem 3D: every single level (add ons included) fresh start on the highest difficulty with no saving. For Blood same thing but on the penultimate skill (Well Done) because the final skill is not fun and meant for coop
also did a bunch of beat em ups on a single life: Double Dragon 2 (NES), Streets of Rage 1/2
Beating Adventure Island and 1943. Yes, just beating them. With continues.
Final Fantasy VIII no lvl up run, but back in the early 00's before there existed a single guide on the subject just using my own knowledge of the game
Mega Man 9 Mr. Perfect

Probably more I can't recall right now

Reminder that it's fine if you don't like Classicvania, but if you shit on them for the controls then you're just revealing yourself to be a filthy casual who got filtered.

>>11976829
1 - Dracula XX
2 - Castlevania 3
3 - Castlevania (NES)
4 - Bloodlines
5 - Castlevania (X68000)

>>11913836
One day I'll go back to Dracula XX and do that no hit playthrough I've always wanted to do. I always ended up getting hit once or twice.