I just finally finished the game, and I think there's a pretty heavy imbalance in the game:
I started the game with the deathknight as my tank warrior, and the paladin as a magician who shoots arrows when the battles are easy.
First disappointment: most cool weaponry and armor necessitates high strength and/or agility, and the deathknight can't take most of the armor. So I had to simply throw most of the cool stuff away, making it much harder to play the game.
Had I instead played as warrior/magician (instead of magician/warrior) I wouldn't have had any problems for all but the last battle.
However the end game is the exact opposite, and I easily won the game at level 30 (or 31, I forget), by purely using the hammer spell over and over again. Without using it I had absolutely no chance, but using it made the whole battles a joke (and that goes for the last 2 bosses, as well as the labyrinth with all the shadows, which are very sensitive to bone damage)
I didn't even go through the drudgery of all of the Act 4 battlefields (I only did one), but I still breezed through the last 2 battles. The deathknight was totally worthless then, even with 80+ strength and all sorts of heavy stuff, the only savior was the hammer spell. Keep the enemies stunned, and chip away 20-30 HP at a time. It takes about 20 large mana potions to beat the last battle, which is rather small.
Ideas? thoughts? I guess I'm just disappointed that there was so much imbalance in the game. (Also I felt that the summonning dolls were worthless, too weak and upgrading them was much too costly)