this projects has a lot to it, multiple levels, different art styles, music, level design. that's impressive. my feedback is:
-the collisions are kinda unfair (player's hitbox is to big), and saws one shots you.
-the difficulty is inconsistent, the level 1 is harder that the level 2, which was already hard. i'd suggest making the first levels easier.
-i think it lacks a bit of juice (particles effects, player becomes red when he hits something...)
but yea overall great project, gg