Strength Attribute
Be the biggest prisoner on The Island.
Strength is the physical power of a person, typically measured by how much you can push, pull or lift a physical object. Is raised by: proper protein intake and executing actions under a load. Is lowered by: protein deficiency and loss of muscle mass. It influences: carry weight, melee damage and calorie burning. Ranges from 1 to 5, but it can be raised to 8 with proper diet and physical activities.

Brawling Skill
Brawling is the skill of fighting with fists, feet and other body parts. Is raised by: doing hand-to-hand damage to players and NPCs. It influences: hand-to-hand attack speed, available combo attacks, blocking efficiency.

Melee Weapons Skill
Melee Weapons is a skill that enables you to use knives, axes, clubs and other hand-held weapons. Is raised by: doing damage with melee weapons to players, NPCs and base-building elements. It influences: melee weapon attack speed, available combo attacks, melee weapon damage.

Archery Skill
Archery is a skill that enables you to shoot with bows and arrows. Is raised by: doing damage with bow and arrow to players and NPCs. It influences: ability to use bows of different poundages, faster reload time, faster draw time, hold time at full draw, faster bow tuning.

Rifles Skill
Rifles is a skill which indicates how familiar you are with rifles of any type, both firing them and maintaining or fixing them. Is raised by: shooting players and NPCs with rifles and crossbow, as well as reloading the said weapons. It influences: faster reload time, faster change from position to position (readying/aiming), recoil, shooting accuracy with rifles.

Handgun Skill
Handgun skill indicates how familiar you are with handguns of any type; whether firing, maintaining or fixing them. Is raised by: shooting players and NPCs with handguns, as well as reloading handguns. It influences: faster reload time, faster change from position to position (readying/aiming), recoil, shooting accuracy with handguns.
Official SCUM in-game content (the game’s own text, translated by the studio).