In the campaign, are there more sections where co-op players can split up?

We have what we call "informal splits" this time. Marcus will tell Dom to go right, but you don't have to split if you don't want to. Gears of War is a fairly linear game, but we've reduced that through the split paths and open-ended areas. We're not trying to pass it off as an open-ended MMO or anything.

Tell me about the new mortar weapon.

It's something you have to learn how to use. We talked about making it easier to use, like the grenade trajectory arcs, but I said, "let 'em learn it." It puts out a blast that's as big as a basketball court, so you can miss a little and still do major damage.

What about the gatling gun?