Cool physics game. My only improvement could be a lower y position limit? One star literally spawned in the most possible upper left corner and it was pretty hard to get there without being able to place the anchor above it.
You gain momentum by swinging back and forth so if you get the hang of that it shouldnt be too hard to reach higher places :)
Yeah your right, I only thought about swinging in curves and forgot about the "bounciness" of the rope