Watched the demo, seems like a hack Specially when he was T with a sniper and wanted to shoot through from T spawn to Mid doors. Just before a CT killed his team mate, he wanted to jump in and see, but he stopped the jump and bam one T was killed, also in B tunnel, not sure if the sound for me was bit blurry, but since everyone was shooting around mid he couldn't know exact position of the CT although he could hear the CT coming.