XP or Experience Points and Perks
Experience points, hereafter referred to as XP, is a measure of how experienced your current character is. As your character earns experience, either passively by simply staying alive or proactively by hunting enemies, you will be able to unlock special perks which will increase your chances of survival.
Earning XP Through Combat
Earning XP by combat is generally not recommended. You should only get combat XP by doing what you absolutely have to to survive. In other words, have 100% gear and a ranged weapon with the odds all in your favor. Don't go actively hunting zombies or other survivors to get your XP and perks.
Earning XP Passively
As you survive you will earn XP at a slow rate of about 1 XP per five seconds. You can expect roughly one PERK unlock per day survived.
Perks are abilities that experienced survivors come to know. Things such as blocking damage in melee fights or requiring less food and water to survive. The more PERKS you have unlocked the better your chance of seeing another sunrise.
Perks can be unlocked in two ways.
You can unlock PERKS by generating XP or you can unlock a PERK by unlocking a character when you meet certain requirements in game.
List of Available Perks
Red+: Lowers the blood loss when the player is bleeding or feels sick
Scout: You can spot enemy survivors from a greater disctance
Sprinter: Run speed increased by 10%
Sharpshooter: Increased chance of headshot with ranged weapons
Blocker: Increased chance to block enemy attacks in melee combat
Puncher: Increase chanced to attack multiple enemies at once in melee combat
Trunk Digger: Increases chance to find loot in vehicle trunks
Sweet Home: Staying inside buildings generates 50% more heat
Snowborn: Cold resistance increased by 20%
Hamster: Hunger rate decreases by 15%
Survivalist: Regeneration speed doubles if your blood drops under 50%
The Bullet Farmer: Each ammo stack you find contains +3 bullets
Camel: Thirst rate decresed by 15%
Hunter: Animals have a smaller chance to spot the player