The game is quite interesting and cool. I went through the whole game, but I was never interrupted by enemies. I do not know if this is a bug or if this is how it should work. It is somewhat similar to the game "Fire and Water", only for one player. I think in the future you can add a two-player mode.

I enjoyed it!

The concept is really great! I just could not get very far because restarting the whole level because of one mistake felt a little bit too punishing, maybe adding several checkpoints could be nice.
But this was a great use of the theme and the double character mechanic is real cool, congrats!