The Legend tree is unlocked after gaining maximum rank in any of the other three skill trees, after which any experience that would previously have been gained in the previous tree is added to the Legend tree instead. Skill points are spent to increase attack power with various weapons, maximum health, increased stamina, and others. At every 25th rank a new outfit is unlocked.
- Unarmed Damage
- One-Handed Weapon Damage
- Two-Handed Weapon Damage
- Firearms Damage
- Bow/Crossbow Damage
- Throwing Weapons Damage
- Health Regeneration
- Stamina Regeneration
- The number of Legend points rewarded for a given action is determined by the difficulty the game is currently set to:
- One of the easiest and most effective ways to gain Legend levels is to repeatedly complete a quarantine zone which gives DROPS, such as Stuffed Turtle, on Normal difficulty, then switch to nightmare difficulty and turn in the drops all at once, rewarding you with 120,000 Legend points per DROP.
- The number of Legend points required to gain a rank begins at 100,000 and only goes up by 500,000 every 25 ranks, making it easier than the other skill trees to calculate how long it will take to reach a certain rank by performing a certain action, as well as plotting your progress towards that rank.