No actual gameplay is shown here, but the gore looks like it’s turned up to about an 11. I think the real news here, though, is that you get a friggin’ chainsaw. That just rules.
Also, I’m glad to see that Valve simply called this sequel Left 4 Dead 2 and didn’t go the Fast and Furious route of calling it something like 4 Left 4 Dead, The Left and the Dead, Too Left Too Dead, and so on. Bravo for resisting that urge. I know it must have been tough.