Not a good game. I really like the concept, but this is where you went wrong.
The checkerboard neon colors doesn't cut it for me. It makes the levels look generic and stupid. Think of something original! The enemies were kind of wonk, and you put them close together. Don't make the destroy-able blocks into points. Don't make progression the reward, make the end of the level the reward. So many obstacles slows the game down. The snow background is out of place and seems lazy.
Try and incorporate the Mini Wizard aspect of the game into the game better. I don't mind the mana bar, but you could improve it's usefulness. Increase space between obstacles. Spread things out. Try out a new mechanic or spell. Keep working.