Is now playable in Scratch 3 ^^^^^^^^^^^^^^^^^^^^^ I shrunk the hitbox to 90% and it is playable. I originally said to do what it says below but I accidentally found a better fix. You can now turn teleportation on and off. Press t to teleport to the mouse.
To read the other modifications, click the original project on top. I also set the final boss health to 4 and made it gray for longer.