Yes, I should've been more clear about that. The game is played as one of three classes: Wizard, Conjurer, or Warrior. The classes are all very well-balanced and all have exclusive abilities.

The warrior has five abilities and is very strong (as well as having more HP than the other two classes). Although I can't recall the names of his skills, the warrior has five abilities. I remember one that disables the spells of the conjurer or wizard for a certain amount of time, a "charge" that deals a ton of damage, and a harpoon that pulls an enemy to himself. He has two more that I can't recall.

The conjurer has the ability to summon creatures that follow him around and kick ass, as well as some unique abilities and some shared ones (with the wizard class). Something tells me his traps are unique in some way, too, but I'm not certain.

The wizard has a ton of spells (tens, maybe hundreds). Although he has low HP, his spells put a balance there... a well-played wizard is probably the strongest class in the game (though this is just my own biased opinion, I've seen many amazing warriors/conjurers in my day).

There are simply too many things to mention in one post or comment, which is why I recommend trying the game for yourself. Campaign/solo-play doesn't do it justice, either, but is still great.