I recall to everyone having problems with the bosses.. here is a BOSS GUIDE: http://www.kongregate.com/forums/3-general-gaming/topics/133466-champions-of-chaos-boss-walktrought
In the training ground the enemies level up as you level up (this way you gain some exp)... and will do much more dps in higher levels.. if you reach.. lvl 40... a wolf will tear you apart in one bite.
Thanks all for the support! I will be releasing a walktrough soon!
Keep in mind that you can win the game with every char combinations! is all about tactics!
Best Wishes!
Hernan Lopez
Epic LLama Warchief!