A decent game with a wealth of potential. Like other comments have stated, it's way too short. As with any game with RPG elements, the higher the level cap the better. Your sequel will certainly be one of the best games on the sites. My top suggestions are:
+Higher level cap
+Larger Variety of Spells - Fire, Ice, Divine are all nice but throw in Earth, Water, Air, Plasma, etc. for some serious variety and teching
+Hard mode or harder enemies. Most of the enemies were cannon fodder when you got to higher levels.
+More boss fights! RPGs are based on boss fights. This sadly had one very easy one.
+In-game achievements! These are always fun.
Overall man, great game. Keep up the good work.