First off... the initial game play sucks. Obviously the developers
thought the players could read, but had never played a PS3 game before.
During the first couple of acts the basic tutorial gets boring, real
fast. Once in the game, it's not to bad... hit-hit-kill with specified
combo. You can upgrade your stats... shield, melee, etc. individually.
The Enslaved story is "alright", but leaves you with "Wait, What?"
Recommendation: Borrow it from a friend.