I understand that working together is key to beating some of the monsters but i'm not clear on the object of the game. Is it a race to see who beats the Dungeonmaster first or if one person manages to win, everyone wins?
I'm thinking about getting the game but i'm wary that the coop may make things less fun. some of our group likes working together to beat a game, but most of my group plays Magic: the Gathering, making them used to trying to screw each other over to get ahead. If there's an ability to PVP Descent is a must buy, because even though you're competing for the finish there's instances where you have to work together, making backstabs more hilarious and fun.