Remember when we told you that Killzone 2 could see co-op as DLC? And then it was quickly retracted that the game would not have co-op because of technical limitations? Shortly afterwords 50 Cent delivered a knockout blow to the game when Blood on the Sand reviewed better in Maxim Magazine. Remember all that? It looks like when Guerrilla Games gets knocked down, they get back up again (tub thumpin) - because in a recent piece on the official PlayStation site, Guerrilla looks to be hoping to add co-op still.