/SLASHPLAY
How to kill NPCs with a command in GMod
With sv_cheats 1 on, type npc_kill npc_zombie in the console to kill every zombie, or npc_kill alone to kill the NPC you are looking at.
npc_kill
Kills the NPCs you name, or the NPC you are looking at if no name is given; needs sv_cheats 1.
npc_kill [name|class] Examples
npc_kill Kill the NPC you are aiming at.
npc_kill npc_zombie Kill all zombies.
Arguments
name|classOptional- NPC name or class, leave empty for the NPC under your crosshair.
What it does
Accepts an entity name or class, so npc_kill npc_zombie kills every zombie.
The game's own description: Kills the given NPC(s) Arguments: {npc_name} / {npc_class_name} / no argument picks what player is looking at
Run it on your server
On a SLASHPLAY server, type it in the Console tab of the server page; the reply shows right under it. A value set there lasts until the server restarts. To keep it, add the line to garrysmod/cfg/server.cfg. New to this? Start a GMod server first.
Your own
GMod server.
From $0.03 an hour, only while it runs. New accounts get 6 free tokens.