A neat game, good job! After very carefully killing each of the enemies in the first room and making my way to the doors, being confronted with the second level full of enemies was quite the shock. After failing to kill more than one enemy in room 2 I died, restarted and the game told my I'd won after completing the first room again.
Played through a second time more evasively and tanking hits and beat it properly. I think there's a lot of potential in the idea, but with the complexity of having the two characters moving simultaneously it might be good to streamline it - either have the challenge be killing the enemies (in which case, I think they could do with dying to fewer hits) or be in avoiding them.
Still, an impressive project for having been built in a short time, nice one.