I've been playing the coop story mode with a friend. I can't figure out how to save our progress. It seems like you can just jump to any map in coop mode. Is there any way to play the story mode in coop while saving your progress or do you have to just remember where you left off and pick up at the same spot.
Also, I'm an achievement whore.Are there achievements available for playing the game the coop story mode? We've finished the first four levels and the only achievement I got was a measly 10 points for completing a coop story mode level. I know there's an achievement for finishing all the maps in story mode. How can I be sure which maps we've completed and which ones we haven't if we can't save our progress?
Also, I'm an achievement whore.