Very nice game! Mechanics are fun and I like the variety of enemies. The enemy encyclopedia is fun as well, being able to see everything the game has to offer.
Super cool that this game was made in pure javascript, but it seems like it doesn't account for framerate? When I first played, I was on a high refresh rate screen and the game ran at like 3x speed LOL. After I lowered the framerate, I stopped instantly dying in every room and had a blast.