This is probably one of the best games I've played this jam, and I am not saying this lightly. The mechanic is super unique and well-made. It is hard to implement a game where you have no agency on how the character moves, but yet it still feels lifely and fun to work with. The dragging mechanic is very well done, and do carries it well towards the end of the game. The boss fight is very satisfying too. Well done!
For some criticisms, I'd say the game sometimes doesn't register a drag (especially the spike in earlier levels) and it's quite annoying not being able to do so despite correctly clicking. I'd also think the final boss is a bit on the easy side during phase 1, and quite RNG-heavy during phase 2. I think adding one or two more phases would ease that problem nicely.
Anyway with all that said, this is a very well-done and polished game. You've done this with a single person too, which is doubly as impressive. Bravo!