First off he's huge, about 7inchs tall,pretty heavy and very sturdy feeling. Lots of articulated joints including in wrists, elbows, shoulder, hips, knees and feet. Loads and loads of little details on the figure, like pipes, straps and all kinds of stuff.
Comes with a rivet gun (6 inchs long!!) and huge backpack. With a bit of fiddling you can get him to a "stand" pose as if he's walking like he does in the game (ie hunched forward, arm swinging the rivet gun). I've got mine posed "walking" holding a lil sisters hand:D (looks straight out of the game)
Overall I am most impressed indeed!