EA demoed Mass Effect 3 during there conference today, it looks freaking amazing. In the demo we get to see that new melee weapon, we also see Shepard calling down missiles from his ship and fighting against a Reaper using a turret. Returning characters include Legion, Liara and Garrus. I'm really curious to see what happens if any of the returning key characters dies off in your last game. The game will launch on March 6 2012.