This suggestion is for fun, but its okay if you do it in-game.

So, here's my INSANELY INSANE IDEA.
First things first, this is an anti-dm/hack idea.
So, admins lv2, can spawn NPC's, these NPC's are armed, dangerous, and will kill any player who it detects has haxor. Its a crazy idea, but im not done.
So, heres the thing.
Admin spawns the NPC, armed with a handful of weapons. Skin, preferably the SWAT skin. This NPC then detects any player using hacks (DM), kills and once that player's health reaches 0, is kicked from the server. After 3 kicks, IP ban. Ip changed? No problem. That same player almost same name everytime he logs in, so the NPC detects that name, kills and namebans that player.
Its a hardcore challenge, and I dont expect this to be taken seriously.
Crazy idea, amirite?
Cheers

Lol wack idea, it sounds impossible to make a npc able to attack a player lol