This game is really not bad at all and everyone interesting in a fantasy role-playing/FPS type game should try this out.
-you'll see various environments
-good visuals (for a 3 years old game)
-valve engine (nice physic)
-Fatalities
-you can choose how you want to play (melee, assassin, mage, archer, a mix of everything.)
-vast inventory (blades, bows, shields, staffs.....etc)
-cool spells
-upgradable combat abilities, magic powers, skills.
-you'll fight knights, orcs, goblins, zombies, dragons, sorcerers, ogres..etc.
and the best of all: the combat system. You can use your environment to kill enemies, use magic, kick people of ledges, combine magic attacks with weapons attacks...etc....each combat can be a different experience.
Cons:
-story is not really interesting
-some glitches here and there
-weird physic moments at times
-near the end, it gets a bit repetitive
I did not try the multiplayer because i'm pretty sure it's dead by now
Overall, this title is worth playing if you like this type of gameplay. The only big problem is that it's the kind of game you'll play once and never touch again. But at the price it is available now (10-20 $) you can go wrong.
My specs:
P4 HT 3,4 ghz
Ati radeon X850XT PE
sound blaster audigy 2 ZS
2 gig RAM