Got it today with 3 hours of work with my buddy. I set up as a host for a player match, set private slot 1 and max 2 players. We did it in order of the checklist. Just one match and one round. We ended it quickly as me as a winner and he's a loser. We got to the last map (can't remember) and had 3 more playlists (team survival, team sharpshooter, and revival) to go but we both got the achievement.
Note: no dlc or map packs download..just all original maps. You don't need to do ranked match as the player match counts.
Originally Posted by dusty2006
ok I am looking for answers to my questions 1 is it best to host all the matches and 2 do we play on ranked or player matches and any other advice would be helpful
No, just do player match. It counted for the achievement. Id advised you and your buddy to decide on which you want to be a host and stick with it.