One of my favorites, however it's very easy to cheese by spamming, cause the tattoo gun hitbox goes offscreen of the skin hitbox. Very good game, 5/5 stars in rating :)
Very fun. You can wall jump by pressing control c while facing a wall, then doing control v to jump away, and it's not too hard to chain it to cheese most of the game
Maybe some checkpoints? Also, you didn't set the game size in the build settings, so the sides of the screen clip into the gameplay, allowing you to play offscreen. Very fun though!