FileForums - Help me find a specific game, please!! :D

Hello.

I have been searching all over the net, just to find a old game that i once enjoyed. I can still remember some parts of it, but i can't google my clues to find an answer.
So i thought someone in a gamer forum could help me since i can't think clear.

It's a pretty old game, I think it's in the range of 2002-05 (it's a PS2 game).
The game is about these three characters who meets each other on a battlefield and they are three different peoples. The first one is a male swordsman, the second is a male mage and the third is some kind of a assassin, female. The game style is like "Lord of the Rings: ROTK". You complete a mission and then you can upgrade the characters skills and weapons for the xp you gained in the mission.
There are a few missions that i remember. There is a part, when you enter some kind of cage with snakes there can fight (u know, they have arms and swords :P ) and in the end of that mission you are fighting against a large fire demon (kinda like Balrog from Lord of the Rings). One of the last missions you are fighting a big dragon.
It's kinda similar to Dragon Age, but not very much.

That's all i got, hope you can help me!