http://arkhamcity.co.uk/viewtopic.php?f=4&t=1371%22
I signed for both co op and player vs player.
I know it could work If done differently then actual campaign. For example for player vs player Player vs. Player for my criteria involves to create a new game inside Arkham City with combat skills for every game character, in fact these skills must be so amazing in order to really explode the potential of every villain or hero on the game. quoted by Makron amazing thought.
For me it could be 1 on 1 to 4 on 4 or sudden death everybody vs everybody. Now the fighting mechanics would have to be drastically changed for this to work for vs each other. Say Batman and his team has to fight the opposing team to reach a point to safe someone or it can be just a flag or whatever so everyone has very unique fighting styles. So the only way you can stop someone from hitting you is evade and block and at least counter.
For co op mode I have to think about haha