Well, as it seems this is the only way to effectively level in this game (WTH Bungo?) let's get on the old Calus train again. At least it will be easy.. Me and the author. Be nice to see some old faces but as long as you know what to do, it's cool.
The game creator, oldskooldeano, should send out invites 5-10 minutes before start time. If you don't receive invites, the creator may have left so start inviting each other through xbox/psn/pc on your own.