Fable 2 ultimately delivers in a great action RPG
Combat is fun and simple. Y for guns, x for melee and b for will/magic. It has a surprising amount of depth however and as you progress, you will soon be getting more experience using more lavish techniques to rid the enemy.
Co-op is fun but it is dissapointing that you cannot bring your own character into the game. It is however very simple to use although the camera can be slightly annoying.
The main quest of Fable 2 took me only around 10 hours to complete, but searching for all the silver keys, gargoyles, demon doors etc will leave you more hours to spend time in albion. However, the game is hardly challenging; you cannot die and you only lose experience points.
Another thing I admire is the way you can buy properties and rent them out, move in, adjust prices etc. Even when your 360 is turned off you will still be earning money every 5 mins and this is very helpful.
Fable 2 presents a world which you can manipulate to your liking and is definetely a game worth checking out.