I like the intro and tutorial. Nice animations.
wow the enemies move fast! :D maybe even too fast. also player's movement is very fast. spell selection is bit tricky IMO. Maybe you could pause or slow the gameplay when selecting spell. Everything happens so fast it is hard to get far, I know that is probably the point, but it is way too fast and players may get frustrated easily because of that. Give them some time to breath and think of their options.
You have something intresting going on here. keep it going! :) good job with the gamejam!