If anyone needs clarification in regards to the snipers and how to deal with them, Dex basically found them on her scanners through the smokescreen. The range isn't very far so for the first two she found were the closest to the group while she'd have to move up to find the last two. Giving the way through to any creative solutions anyone might have to deal with the other two. Or to quickly resolve the sniper problem to keep up a good pace so we can get down to the big fight with the 20 or so batarians waiting for us at the bottom of the mine shaft.