Super cute on the modelling front. Love your character a lot. I would recommend looking into making the controls consistent based on camera angle rather than world space, as using a to go down isnt always the most intuitive. Signaling that the climbable object is important with more than just color (maybe have it covered in a sticky material or signal with words) would also help with more intuitiveness I think. Really cool once i figured out the mechanics, and I really love the model for your character a lot! Nice job!