Great concept and easy to pick up! I like the proximity based camera zoom, which sometimes made it more strategic to send one player out to scout ahead and get a bigger view of the map. The puzzles were intuitive and gave off a bit of a Portal 2 co-op vibe (maybe mostly because of the color scheme) :P
It sometimes got a bit weird when the two players got too close to each other though, and sometimes when the camera was zoomed out and I clicked on a destination the game thought I clicked on top of a wall. With a bit of polish it'll look real nice! :)