Sneaking up on enemies and taking them down one by one can definitely be an effective strategy in this game and I try this tactic most of the time no matter if its a human being or a zombie. It requires patience and precision, but the satisfaction of clearing out an area stealthily is well worth it but I don't remember clearing out a full area in stealth. Of course, things gets more challenging when enemies are alerted to my presence.
I'm glad you enjoyed the shots, and I appreciate your support for the contest.