More of the same
Deniable Ops: Insurgency just expands the coop game play with four more maps. If you liked the coop that came with the game you will probably like this. The achievements sort of act like the in game challenges making you get specific kinds of kills in specific locations. But even on Realistic and going for the achievements it seems a little short (2-3 hours with decent partner) for $10 however it may be worth it to get the S rank.