I found a decently useful glitch. I kinda want to tell, but I don't want you to remove it. So, when you reach the Rat Boss (after getting the double jump), if you're on the ground and keep either the left or the right key, you become invincible. By that, I mean the rat boss can stand next to you or throw those mice and you won't die. Was it intentional or not? Either way, PLEASE don't remove this glitch