Replay 2 is bugged yes. I've watched replays for 2-3 times, and all I could see was pure sound play. I know how a ESP user would actually play, like constantly looking at wall, moving way before anyone else and changing direction as the host does. In town map, Relax was near blue base and Nimer was in alley, and he moved after he saw relax coming towards mid which is not hard to predict.
Rest of the maps were completely sound play as Josh and legit mentioned, host made a tons of sounds jumping, slashing, dashing. Over all I don't think the user is using esp.
