This was a really interesting idea for a game, especially that you have to use your enemies against each other.  I also like that the enemies changed forms, both visually and offensively, and that the ice and fire attack patterns for the spirits and the cauldrons(?) were different from each other too.  I will say the reflection did feel very random and it was hard to tell if the 3 mirror shapes did anything different though, which made it very difficult to aim at something specific.   I'd love to see a little more variety and reliability, for instance if you are upagainst a single level 3 ice spirit sometimes the cauldron blasts would only send 1 or 2 fireballs towards me and then those when reflected wouldn't even travel towards the enemy.  Maybe something like reflected shots always travel where you are aiming but you can only refect 1 element at a time, which you can cycle instead of shape.  Or possibly other things to interact with in the level, like a turret that shoots explosive shots you can reflect. Not sure just brainstorming, because this is a cool and really unique game!