Gears of War Lethal Dusk Act 2 Video Walkthrough

if you go to the chapter select and then u select act 2, lethal dust......and when u start from inside the house and dom says "Its gettin late, we better find that checkpoint" and u start with the longshot....so basicly if u just load the mission u will get the sniper

theres a can thing when u get to the dark alley part...you go to that place that had the ammo n grenades with the hole in the wall and from there shoot behind the trashcan.