That's a cool game! I really like the theme and overall aesthetic. Nice animations.
I liked the curved (spline?) level design as a departure from traditional square tile grids. The climbing mechanic was cool, but it did have some issues sometimes. When I first started, I went over to the left to the cocoon, and accidentally got myself lodged in the wall. Then I jumped up through the wall and figured I would explore, and ended up falling off the left side of the map. So of course I had to keep going and I was able to climb up the right side of the surface and fall off the right side too, haha.
I read the comments about the apples being checkpoints, but somehow I couldn't get those to work. Each time I died, the caterpillar would go black, but nothing else would happen, so after trying all the other controls I would just press Escape, which would make me start over at the beginning. If I can figure out how the checkpoints work, I'll give the game another go.
I thought the melee combat against the ants was pretty clean, with the attack range and knockback being clear and well balanced. However, if I attacked an ant that was facing away from me, it would get knocked "back," but actually that would mean towards me so I would get hit.