Wow, the difficulty in this game is really gimped compared to first game. I've played through Act 2 on Hardcore so far, and the game is so easy staying behind cover doesn't really seem necessary at all. I really wish that Insane was unlocked from the start, because honestly this is pretty boring. I was playing co-op, but I might not even bother for the rest of the game, just to make it slightly harder.
At this point I prefer Gears 1 in almost every way. The raw, gritty, visceral feel from the first game is almost completely gone. I don't like how the weapons (especially the new Lancer and Hammerburst) sound and feel. Even the chainsaw doesn't seem as gruesome or awesome as in the first game. And everything's so easy, it's drastically affecting my enjoyment of the game.
I still have more than half of the game to go, hopefully things get pick up. And hopefully Insane is actually insane.