Matt was crouching around the corner of a hallway that two guards were patrolling. He waited until his Detect Life was available again and used Martha for remote surveillance. Once the two guards got next to each other they would stop for a bit and chat. The moment then turned was when they were the least aware. Matt quickly ran up the hallway at the exact moment of the turn and with his new bonuses from Improved Reflexes quickly took out the first guard.
His weapon was practically silent due to its design, so the guard walking away didn't even notice what happened immediately. As the first guard was falling to the ground, Matt got close enough to the guard walking away to disable him with another shot from his gun. He didn't intend to commit a slaughter if he could avoid it so his weapon was set to a low strength. The bullets he employed utilized a shock to knock his targets unconscious. Once the two guards were down, Matt quickly disabled their communicators and guns.