I only played this by myself, so maybe it's a much different experience with two players. Anyway, I feel like it may work better if the characters were separated, as currently you can simply do nothing but stay in the same light as your opponent. Otherwise, maybe the ability to push your opponent away from you would prevent this. 

Also, something to add some more strategy to which actions you choose would be good. For example, if you copy the same move your opponent just did then maybe it isn't as effective? There is an old game called Get Tiffany in which you try to get attention, it might be worth checking out for how its mechanics work (if you can find it).