This game is absolutely amazing when it all clicks. I'm at Act 2-5, and loving it, even though I just ragequit. Rocking my fully-upgraded AR and ending robot lives all over the place.
I got to the big slope area with falling debris that's been shown in a lot of preview footage, and after finishing everything off, I was mopping up to get upgrades, as I tend to do. Unfortunately, while grabbing a rocket launcher, I got hit by some errant debris and died instantly. What a waste.
Still, I look forward to tackling the same area tomorrow. The game is so fast, and your abilities give you a lot of flexibility in how to tackle any challenge. I hardly use grenades, but besides that it's great taking advantage of boost and ARS mode to turn the tables on your foes.
5 deaths at this point, not counting my last one.