Yes, only 2-player split screen per console. I actually have all of Act 4 already done in 4-player from my first playthru, but I'm more than willing to help out. I do need to do it on insane anyway. I'm starting to think that the best way to play insane is with 2-3 people in arcade mode, not 4. You definitely want more than one person so that you can respawn, but sometimes it's actually helpful to have one or two AI players rather than human players. SOMETIMES being the key word, but sometimes they'll actually push forward, draw fire, etc, and make things easier on the humans. Other times, they are useless, of course. 100xp - thanks for the help last night, that outdoor section of Act 5 Chapter 1 was really annoying, I didn't want to give up because I'd already gotten past the first couple checkpoints, but I was getting tired of reloading. We finished chapter 1, then did all of chapter 2, then I did chapter 3 by myself. Still need chapters 4 and 5 in insane in Act 5, plus all of Act 4. For 4-player, I still need scattered chapters in acts 2 and 3, plus all of Act 5.