Cool multiplayer game, Simple and easy to play with your friends, I suggest to make this concept into a full-fledged game with my suggestions:
1- Add an online multiplayer.
2- Add more demonic characters.
3- Add single-player mode (if you can do AI it will be cool)
4- Add more levels. 5- Add little projectile for the players or traps.
6- Add joystick and gamepad supports.
7- Make it support four-players in one match!
Best of luck :D