I felt like since both characters are using physics to move, they sometimes don't move exactly at the same place even with the same inputs so they can desynchronize pretty easily, which feels unintented (I don't know if this was or not). Same with death and respawn it was pretty confusing at first to see the entire screen fade when falling in a pit when only the character that fell respawned.
But despite I think that it's pretty cool to see the level ideas, the body stacking mechanic and an intro cutscene, especially if this is your first game!