What cuphead mod that make it challenging but i DON'T want bosses HP become longer and only their HP stay the same?

I want to challenging myself with a challenging mod because I've found goopy le grande and the root pack are less challenging, even in expert mode so I need a mod where it can get more challenging but I don't want bosses HP getting extanded and just want bosses HP stay the same, I don't want bosses HP are long and I want a mod itself where only can get S Rank under 2 minute, I don't want a mod where can get a S Rank under 4 minute of the mod