So I played using your advice and was able to beat the big reaper. The only thing is that after I killed him, I continued walking until I went right off the edge of the level. I tried to pause so I could screen grab and realized the position of the pause is underneath the Itch.io UI so I couldn't pause! Maybe consider making your game window smaller. I use 980x635. Hope this helps, I'd like to see more of the game after level 2!