So I rented GoW 3 today and overall, im liking it. But the thing is I havent played a GoW game in months and while I have been doing ok in verseus, theres just some things I have to improve on, most notably with the gnasher shotgun and to avoid getting ambushed. First off what are some good tips on getting better with the gnasher, most notably when I get into to shotgun fight? Another thing thats been annoying me is I've been a victim of getting ambushed from the rear, no matter now cautious I am. But anyways, what can I do to prevent myself from getting killed from the rear? Besides all that, these are the only 2 things I need help with at the moment.