Awesome! Ive got 5 of the 7 bloody guns! I didnt think I'd ever bother to do it - only played Co-op with Jack, and even that was only for about 2 hrs tops.
Wonder why they did this? People complaining? No one wanted to sit through 10 - 15 hours of co-op to get just a couple of extra guns?
(I bet Lucky and his bro feel cheated now - it took them about 10 hrs to get everything from memory. And here I am - almost there too, in just a couple of hrs! I must just be uber leet, whadda ya reckon?)