All 7 of us have 150-250 hrs clocked up on the standalone. This is the first time any of us had experienced a hacker we could confirm with our own eyes. It happened outside Solnichyniy. We heard shooting from the town and saw 3 dead fresh spawns. We thought some random bandits and began to approach in V formation with roughly 35meter spacing between us spread out on the hill and down below. Next we confirm sighting a lone guy with an m4 appearing on the road. He is 200 metres from us. He vanishes. We assume desync. Suddenly rapid fire from a single M4 opens up on the left flank. Two of my squad report been killed from behind. And by behind I mean 1 meter behind them. We assume clever ambush and adjust accordingly. But no one is there. There's another burst and another squadmate goes down. Shot from behind. (Within 1 meter) 70 meters in front of us the lone m4 guy suddenly reappears between the tracks and road. Then vanishes. He reappears behind the guy next to me and 1 shots him. Before I can aim he vanishes again and I hear his m4 burst fire from 1 meter behind me. Black screen. I'm dead. The hacker then made swift work of the rest of my squad. All shot from behind within 1 meter. I hope we can play for another 150+ hours before experiencing this again. We love the game and don't want to see it destroyed.