really well-structured co-op game! Although I didn't have a friend to play at the time... took it as a challenge to see how far I can go while solo in 30 minutes!
Really liked the main movement mechanic. After I got a hang of it, the movement itself is structured really well and felt really smooth. Also loved the visuals. The background was a nice animation and surprising not distracting. Nicely implemented there.
A small suggestion would be to limit the distance of the players---as far as I played I haven't encountered a puzzle where both players need to move at the same time. I feel like it could increase the co-op element.
Great job!