BTW, Episode 2 is cool. I don't wanna give away too many spoilers, but there is this one "defense" mission where you guard a bunch of tunnels, and the final fight sequence there captures the raw havoc and confusion you'd normally only see in multiplayer perfectly. In fact, all of the defense missions in this one are a huge improvement over any of the other games defense missions. You don't spend 30 minutes running around resetting turrets -- ok the first time, but boring after that -- but rather run around doing various things. My real complaint is with the final defense mission -- I ran out of "heavy" ammo and had to run around with my grav gun and a pistol, not enough to take out enemy heavies with (even with a ready supply of logs, which are nice physics weapons combined with the grav gun).
Oh, and the outdoor scenes are amazing!
