Adding or modifying guns tutorial - Zombie Survival Mod for Counter-Strike: Source

Adding or changing weapons in Zombie Survival

Adding guns in Zombie Survival is easy. You need to edit one or two files, and you are done!

ZombieSurvival reads the weapon names, damages and actual weapons from a keygroup file,
called zs_human_weapons_db.txt. Inside this file are basic instructions on how to add weapons.
I suggest you use WordPad to open them, as NotePad sometimes screws up.

Firstly, open zs_human_weapons_db.txt. The numbers you see are the number of kills you need to get the gun. The "name" section inside that number 'key' is the name of your gun. It can be anything. The "weapon" key is the actual weapon you are giving them. It MUST be a REAL CSS weapon. The "Damage" key is the damage the gun deals each shot. Change and modify these at will. You can add grenades (weapon_hegrenade), and every time a players grenade explodes he will be given a new one. You cannot modify a grenades damage. Set the damage to 0!

To add a heal or a armor upgrade to the group, do the following:

Add a normal gun to the list. Change the name to +X Health/armor (Where X is the ammount of health/armor). Change the "Weapon" number to _heal or _shell, for Healing a player or giving them some armor. Change the "Damage" number to how much health/armor you want to add.

To add more than 1 weapon keygroup, you need to make a new text file, in the following way:
zs_human_weapons(NUMBER)_db.txt. The Number must be in order (You cant have a keygroup with the number 10 in it without having all of the numbers below it). Remember, you cant have a
zs_human_weapons1_db.txt, because ZombieSurvival wont read it!
After you have made your weapons, go into your CFG folder and select zsconfig.cfg. Open it
and find the section dealing with weapons. Make sure "Use random weapon keygroups" is set to 1
and you have set how many weapon keygroups you are using in the setting below it.
When you are done, restart your server and away you go!