A Great Game
This game was really good. Having the different classes is a great feature, allowing people to choose a character that can fit to their fighting style. I also like the idea of having a selection as to where to put your ability points after each level. What I would suggest is a possible formation that the monsters could go into for defensive or offensive attacks. For example, if you were to attack the monsters, the melee monsters would go straight for you, while the ranged monsters would shoot at you while moving away from you. This would prevent the player from continuously going in a counterclockwise fashion around the arena, prevent himself from all ranged damage. Nonetheless, smooth gameplay, and kept me playing for a few hours...
That is, until it crashed. Even after refreshing my browser cookies and cache, the game always seemed to crash on me after level 14. It didn't matter what class I had, but it crashed. Minor disappointment that I am looking forward to getting fixed.
If you can fix the issue of it crashing, as well as adding a little bit more strategy regarding enemy formations, I will be back at this game for some more hours.