Amazing job on this! The only issue I had was after I died I selected 'load', and if I exited the menu, it would resume the game at 0 hp, and I could move around and play the game like normal, except the enemy I died to would still be stuck in the same spot on the screen until the next encounter. I did this after I died to the knight, and I assume I was supposed to get the Best Key after the fight, but I didn't get anything and was basically soft locked. After I reloaded the page I was unable to replicate it, so it might've just been a fluke.
Other than that, the game itself was really fun! The music and sound effects were great, and the artwork was amazing. I was reading the discord the other day too, and you've got some crazy dedication to finish this in one night, (and morning, technically). I hope you were able to get a lot of sleep after all that!