Perception: Perception is the measure of your sensory awareness. Increasing Perception raises the headshot bonus and dismemberment chance with spears, rifles, explosive weapons and tools. Includes: Combat Perks, General Perception Perks, Scavenging Perks.
Strength: Strength is the measure of your muscular might. Increasing Strength raises the headshot bonus and dismemberment chance with shotguns, clubs, sledgehammers and tools. Includes: Combat Perks, Construction Perks, General Strength Perks.
Fortitude: Fortitude is the measure of your physical resilience. Includes: Combat Perks, Recovery Perks, Survival Perks.
Agility: Agility is the measure of your athletic prowess. Includes: Athletics Perks, Combat Perks, Stealth Perks.
Intellect: Intellect is the measure of your mental ability. Increasing Intellect improves head shot damage with intellect governed weapons such as Robotic turrets and stun batons. Includes: Combat Perks, General Intellect Perks, Influence Perks.
Perk Books: Series included: Ranger's Guide to Archery, The Art of Mining, The Automatic Weapon Handbook, Bar Brawling, Batter Up!, Magnum Enforcer, The Fireman's Almanac, The Great Heist, The Hunter's Journal, Lucky Looter, The Night Stalker, Pistol Pete, Shotgun Messiah, Sniper, Spear Hunter, Tech Junkie, Urban Combat, Wasteland Treasures.
Crafting Skills: Armor, Blades, Bows, Clubs, Electrician, Explosives, Food, Handguns, Harvesting Tools, Knuckles, Machine Guns, Medical, Repair Tools, Rifles, Robotics, Salvage Tools, Seeds, Shotguns, Sledgehammers, Spears, Traps, Vehicles, Workstations.