I'm looking to do the Rustlung method to complete horde waves. (The other horde medals will be done along the way.)
Rustlung method: http://youtu.be/_cgjI_6TAss
So yeah, I need one other person with a spare controller to do this with me and if a third person wants to join just to sit there to do horde waves then they can.
(Use this thread to find others to do horde medals if you want.)
EDIT: Horde mode is complete for me so no more messages please. This was a very good method to complete all horde medals.
I'll leave this thread up so others can find other players to do this with. Good luck!