It is intended to be more challenging than the other defenses, but I am making some changes. In the current Patreon version the interaction now respects easy mode, and I also adjusted the timing a bit across the board. I also intend to add keyboard bindings for it, that’ll likely be in the next free release. I am able to do it on K&M but I made the game so I’m a poor judge of how hard or easy anything is, and many people have complained about it, so it’s definitely too hard.