I really like the concept of the game, but...something feels off. I'm not sure if the controls aren't precise enough or if the physics are too slippery or if the spikes' hitbox is too big or what, but I don't feel like I'm fully in control of Gelu.
Having the spin be paired with a jump doesn't help. I can't line myself up with where I need to fall, because I'll just throw off that alignment as soon as I jump. It's an odd choice.