Not much to say since this is old levels.
I just now noticed that the Itch.io gifs show enemies flashing red when hit but that doesn't happen in game. I assume it's something you've removed? I think it looks nice.

Even with the framerate limit of 144 my game was running at 2500+ FPS until I enabled v-sync.
This also happens in-game but it goes down to 400 FPS.
This pier is wrong:

this is a trial run of the actual demo I’ll be putting up on Steam next week.
Best of luck!