Perks

Basics
Whenever a player gains enough experience to advance to their next level, they gain 1 perk point. Perk points can be used in the perk menu, which ied on the right of the main menu. In the perk menu, perk points are used to unlock or upgrade perks, and there are perk slots which may be equipped with perks.

Advanced Information
Perks can be upgraded to level 3. As level 1 (unlocking the perk) costs 1 perk point, level 2 costs 2 perk points, and level 3 costs 3 perk points, a single perk requires 6 perk points to be fully upgraded. The saturation of the background of a perk increases as its level increase.Upon reaching level 1, the first perk slot is made accessible. Up to 9 perk slots may be obtained, at levels 1, 5, 15, 30, beating hard and nightmare difficultys, surviving wave 30 nightmare mode on every map, surviving wave 30 impossible every map, and staying on the zombie slaying leaderboard.

Certain perks are called "Locking Perks", meaning that once put into a slot and the "Play" button on the main menu is pressed, their slot cannot be used for another perk until the player leaves the server.

There are 4 types of perks, conveniently indicated by color. They are:
 * Offensive Perks (Red)
 * Defensive Perks (Blue)
 * Mobility Perks (Green)
 * Monetary Perks (Yellow)

Offensive Perks
Perks that are based on weapons and stats.

Defensive Perks
Perks that are based on health and protection.

Mobility Perks
Perks that are based on speed and endurance effects.

Monetary Perks
Perks that are based on income and currency. гей ахахаха