The game text on the page promises a lot, e.g. "Fast, unforgiving combat, scanlines, synth noise, and retro UI". It does not deliver any of this, and the onboarding was miserable. I did not know what to do here. The only keys which did anything were SPACE and ENTER, and they only changed the level layout. Else, nothing happened. This game does not work. I tried it in two different browsers.
I do not expect a perfect game in a GameJam - mine is not perfect either, not even good at this time - but to have a character which can do something, at least move, is the minimum in my opinion. I hope the game gets fixed and can rise to the expectations it has risen in the description.