There's a challenge to complete chapter 12 using only the bow and arrow playing as Thomas.  It's a damned hard way to earn 15 points is all I can say. 

Still loving it out on the open plains completing side quests and spending money carefully to try and get the best weapons.  My vote so far for the perfect combination is thus:

Pistols: 1) Superb Volcano Gun (nice top of barrel loader with ample power and a generous 12 shots but slow reload). 2) Superb Quickshooter (balances your hand if your primary pistol is slow to reload)

Rifle / Shotgun: A tough one this.  The Shotties are amazing up close, but the Superb Classic Rifle, in the right hands (not Monty's) is deadly at long and short range.  Rifles need to be hip-fired close up and can do okay in a pinch, I love the shotgun but it just doesn't give enough range.  Basically each level has different needs, although I wish they had introduced a crate strorage system like in Far Cry 2.

Bow: Just the coolest thing ever.  At first the silence is weird, but it takes the fast paced parts of the game to a surreal level where you silenty pick off enemies despite the chaos all around. 

One rumour on Ubisoft site suggests the DLC may include the addition of Co-op play.  If it's true and has to paid for then quite frankly it sucks that it wasn't put in to start with!

I love this kind of challenges. They add replayability and variety value to the games. I will propably get it in September before the big games storm in.

DLC is out.  4 Multiplayer Maps.  Disappointing.

It's currently 36.50 at play.com.