Kenny's death (at least when Ben is alive) sucked.
I helped Kenny shoot the kid in the attic, but Kenny didn't learn that sometimes the right thing to do is to shoot someone and move on. Fortunately Clem learned that lesson and shot Lee in the head, but I wish Kenny had learned it, too (and I thought he had).
I thought Kenny was going down to give Ben a few words of comfort (since Kenny understood Ben better after their fight) and then shoot him in the head.
Kenny did the right thing by Ben, a guy he hated, and I respect him for that. However, he abandoned Clem, just like Katjaa abandoned Kenny. I thought Kenny was better than that. I don't think the writers were fair to him by having him choose to die right after his speech about how people shouldn't give up.