Solo/Coop Dark Agent
The guide says you have to play perfect agent coop -> dark agent coop -> dark agent solo to get it done in 3 playthroughs.
But my friend did perfect agent solo -> dark agent solo -> dark agent coop and got all achievements.
So my question is...is it possible to get all coop achievements in 1 playthrough after beating it solo? Will I be able to choose dark agent in coop or do I have to join in that case? I just dont want to beat it on dark agent (coop) without getting any credits.
I would like to do it solo first. I want to unlock a few weapons to make it a bit easier in coop.