Iron With Friends

Today features another "Iron With Friends" challenging you to finish a campaign mission on co-op with the Iron skull turned on.  I just discovered that you can actually do this yourself in split-screen with a guest on the second controller.  If you sprint through Winter Contingency, the guest will just teleport forward as you make progress so you never have to touch the second controller.  The only place you have to move player 2 is after the Falcon drops you off by the blast doors, where you'll have to move player 2 out of fire.  I moved both players to the stairs, and then moved one at a time into the blast door area.  For those who can't figure this out, I'll likely be on at 11pm tonight to work on the multiplayer challenges.