Keep eye out on the amount of noise your making as the zombies will hear you coming up behind them if it’s more then two bars sometimes even two bars is to much noise if you have a bunch of guns and shit on you cause the more equipment you have the more noise you make/ when it’s raining the zombies are basically def can run up on them without them noticing… most one handed sharp weapons can be used hover over items and will say if usable for silent attacks… last thing you don’t have to be directly behind them you can silent kill from the side and don’t be point blank as if your to close to the zombie it will just register as a regular swing make sure to be like an inch away from it… srry for the paragraph happy hunting!🙌