What you need:
A friend
Die Rise

Step 1: Have a friend sit in Transit lobby.

Step 2: YOU go to custom games, click the Die Rise logo, then click the buildings.

Step 3: Hover over "Die Rise"

Step 4: have a friend invite you.

Step 5: HOVER OVER accept game invite

Step 6: Have him put it to CLOSED

Step 7: Have him start it and when the loading screen says "Green Run" Click Accept.

Step 8: Invite 4 people, start it, then inv the rest!