Good try! It's certainly a very cool concept with nice magical effects and spells, I think those are really well done and beautiful, but there is something to be said about a need for visibility.
It's problematic when some of the spells make it hard to see anything, it's also a spellsligning game in tight quarters and small rooms which is also a little hard to handle, attacks often come too suddenly that way.
You have a basic cooldown system which is good, but it feels too short, granted, it'll be rough to not be able to do anything at all. I would have suggested having a free basic attack, but if that doesn't work, having seperate, longer cool downs for the 3 types of spells would be nice.
You had it before, but making those red enemy projectiles stand out more would be nice, even if you can't add a new effect, making them glow brightly or something would be nice. Also sound effects, though we can't things now, sound effects would go a long way to giving it some impact.
Good try on the game! The only thing you didn't do was the audio, the enviroment is really well done and you made a character which is always a fairly tough task, the special effects were also really cool!