The goal is to handle the commons and hordes whenever possible. I usually run an 870 for specials that get to close, but this is not the deck for people that want to take on Tallboys face to face. They will hurt your feelings.
This deck is better in Act 2/3 since you dig a little deeper at start, but as long as you've got a good team to help through the first missions in Act 1 it runs just fine.