Woah, really cool concept! I do have a few feedbacks, though.
For the first 3 levels, I was genuinely tense and hooked. However, after a certain point, that tension started to fade. Whether I won or lost, my finger got cut anyway, which eventually made my actions feel a bit meaningless. Fear mostly comes from uncertainty, so I personally would’ve loved it if losing a finger was a direct consequence of a mistake rather than an inevitable event.
As for the clown, he feels a bit like a generic villain. We don’t really know his motivation or backstory, so his actions felt more random than creepy after a while. Like “he’ll probably just do something random and cut my finger again”.
Still, awesome job! It definitely managed to pull me in right from the start.