Not worth the money, go for a rent.
Most people mistake the rpg element to have a leveling system and a very heavy plot backing the game up. Unfortunately, this isn't true. Role Playing Game means you play as a character or more and develop them through the story but means of levels, skills, equipment, and story etc. The plot is not epic but it shouldn't be classific as bad, there are little to no twist in the plot. The plot unfolds as you follow a very linear routine from point a to point b and you got your game.
The graphic looks outdated, the engine that is used might be a little old. Putting everying on max doesn't make the game look like a 2008 game.
The single player has no replay value, it is a one time blast through and thats it, so far I played it once and I think I can stand to play it twice.
Multiplayer wise is a let down, extremely little things to do fo the multiplayer section you might just hope on and go for a few round of killing. Then it is quit time.
Renting seems better for the single player, if you want to own this you can wait a few week and the price will go down.