The Art looks absolutely amazing, the ending cutscene is just cute (a "The end" would have been nice so that you know when it's over), only the playermodel art clashes with the background (it's a gamejam so that doesn't really matter)
Now the platforming: You can't use W to jump. Also the walljumps sometimes just won't work.
I also found 2 bugs:
In the last level you can skip the monster activation by zipping directly to the second zip point, skipping the first one (and therefore the trigger) entirely.
And once I managed to get permanent slow-motion after respawning by dying in the same moment I hooked somewhere, couldn't replicate it so it may be rare.