It's real tough entering a coop game into a jam--I finished all the other entries in less time than it took to corral another player and find a time when we could both sit down and play this. (I do a lot of my jam playing in the middle of the night.)

The networking worked perfectly, though, and I know how tricky that is. In fact all the implementation was very smooth and polished. But when we actually did get together and play, our experience was:

Match 1: Died 10 seconds in. Neither of us is sure which one of us got killed, or by what.

Match 2: Wandered around looking for things until the timer ran out. Didn't manage to find anything except the music box.

And yeah, that's probably just us being dumbasses--maybe if we played Minecraft, we'd be more used to this type of game and we'd be less bad at it--but that was our experience.