http://www.bungie.net/Stats/ODSTg.aspx?gameid=15887191&player=PhoenixDog Zarash and I went for over 1 million points together in a 2-player Normal difficulty run on Lost Platoon tonight. We ended up at one point with 8 lives to spare (more than you start with) and an end just didn't seem possible, even minutes before we actually did run out. We thought it was awesome just to get the achievement...Let alone over 5x that amount. 4 player coop be damned!
