A lot of fun, but also very challenging! I'm not sure if that was the intention (I guess it might have been, seeing as the respawn time was very short, which I very much appreciated), but do consider that the average player usually won't be as skillful as the person who created it.
Also, there were a few times that I ran into a bug where Gloom got stuck in some kind of rolling animation, which prevented you from doing anything and couldn't be recovered from even with a reset or level skip, which meant that you had no choice but to restart the game.
Overall it had great atmosphere and interesting mechanics, it just needs some more polish (as is the case with jam games).