Perks & Attributes

The five attribute trees and how to plan a build

The system

There are five main Attributes, each with ten levels: Perception, Strength, Fortitude, Agility, and Intellect. You start at level 1 in all five and raise them by spending skill points — 1 point per player level. Each attribute has its own set of perks, gated behind attribute-level prerequisites. For exact perk names, ranks, costs, and per-rank effects — real numbers pulled straight from the game files — use the Perk Planner; this page covers the strategy around choosing a build, not the line-by-line data.

The five attributes

Attribute	Playstyle it supports
Strength	Melee power, mining/harvesting yield, heavy weapons — the "walk into the horde" build
Perception	Ranged/precision weapons, stealth headshots — kill zombies before they know you exist
Fortitude	Health, durability, pain tolerance — maximum survivability builds
Agility	Speed, stealth movement, high damage from stealth attacks
Intellect	Crafting, robotics/turrets, vehicles — "let your gear do the fighting"

General perks and books

Not every useful perk is locked behind an attribute. A general perks tab holds skills available to anyone with points to spend regardless of attribute investment. Separately, Perk Books found while looting unlock permanent bonuses outside the skill-point system entirely — they don't need to be read in any particular order, so pick them up whenever you find them.

17 perks hide a real effect their own descriptions never mention — a temporary boost toward a specific "Vol 1" challenge book matching that perk's own theme (Lock Picking → The Great Heist Vol 1, Dead Eye → Sniper Vol 1, Boomstick → Shotgun Messiah Vol 1, and 14 others), each turning off once you've completed that challenge. Lock Picking is the most notable case — it hides two of these at once. See Getting Started for the full breakdown, or the Perk Planner for the exact per-rank numbers on every affected perk.

Planning a build

Commit early to one primary weapon type, one secondary, and one utility focus (crafting, vehicles, or base defense) rather than spreading points thin across everything.
Attribute levels gate perk ranks — check the requirement before assuming you can max a perk immediately.
Multiplayer groups benefit from specializing differently per player (e.g. one Strength/melee tank, one Perception/sniper, one Intellect/crafter) rather than everyone building the same way — see Multiplayer & Servers.

Tip: Certain drugs and consumables temporarily raise an attribute, which can let you meet a perk's prerequisite in a pinch without permanently investing points there.