Giant Bomb: "Last week Microsoft held an event devoted to letting people play through Gears of War 2. This was one of the first times that people were allowed to play through the game's campaign mode.
In short--because I'm leaving for the airport to head to Tokyo in a few minutes--Gears of War 2's campaign is largely what you'd expect, from a gameplay perspective. The new stuff, like additional weapons or additional maneuvers, is sprinkled throughout, but yes, you're still armed with a lancer at the outset. Yes, the game opens with an optional tutorial. And yes, it's quality stuff."