OK, I love the different transformations, each with their own abilities and attacks, which are all fun to use (you could have a little note in the tutorial that you have to hold to combo, not click repeatedly) . Especially the phantom form, which has the amazing kunai teleportation and a double jump. It's just super cool, such a great idea. I wish I could use it against the regular enemies. However, there are a few problems I had with this game. Such as...
The boss of stage 1.3
I couldn't beat this boss. Form 1 does useless damage and you only use it when you are out of mana and have to kill some goons. Form 3 (the best one) is also useless since it only works on the phantom enemies. Form 2 is your only option for damage, and with the limited defensive options the boss and its minions would always reduce my health to zero before I could recover my mana bar for the second time. The bats would always reliably damage me with their ranged attacks while I tried to get close in form 1, or while I was charging my Level 3 attack from afar.
After many attempts, I still wanted to see the remaining three stages, but I wasn't about to lose my mind against this boss. So that's where I quit.
Verdict
The attacks and abilities are great in their own right, albeit with slightly clunky controls. The enemies aren't very fun to fight against, and the levels don't do much. For a jam game, it has some very fun core gameplay, it's just that there isn't much more than that. I think it just needs some better music, sound effects, more forgiving enemies, and polish.