I finished this game in 1 sitting,what could be a bigger compliment?
Naughty Dog really listened to the critiques the original Uncharted got.They have improved the aiming as well as the fist to fist fighting mechanisms. They also fixed the way you throw a grenade,however the grenade mechanism from the original is still activate-able in the options menu.
Another thing Naughty Dog did to make this game better than the original,is constantly throwing you into different situations and varied areas,one moment you're climbing a hotel in Nepal,the other you're riding and fighting off helicopters from a train.This diversity in the game made it a constant rollercoaster ride you just simply can't put down.