Theres is this sharp sound, kinda like drawing a sword sound, that would last just a second long. Does it have anything to do with the new agent? Coupled with the invisible footstep in icebox

I've been working to improve myself in game by aim training, practicing in the range, and watching other pro players play ranked matches and learn tricks from them. In Act II, I was hardstuck Gold when my friends were Platinum and higher. I...