Default unlocked Abilitys from start...

 - Hold breath longer underwater
 - Less aimed weapon sway
 - Crouched noise reduction
 - 2 Extra throwing knifes, molotov, dynamite, flash, smoke, emp, poision and explosive grenades
 - Less general damage
 - Less holow point damage
 - Less full metal jacket damage
 - Less normal ammo damage
 - Less damage from falls
 - Less damage when in a vehicle
 - Less damage from animals
 - Headshot bonus damage
 - Bodyshot bonus damage
 - Throwing axes and knifes damage bonus
 - Mele damage bonus