Yautja

Infrared: Creature permanently has infrared vision. The Xenomorph monster and other exothermic monsters/creatures cannot be seen with this skill. 

Hunter: Creature is a dedicated hunter of dangerous prey. Creature gets +2 to all rolls when hunting/fighting a creature of challenge rating 20+, or characters of level 15+. 

Code of Honor: A set of rules that govern day-to-day interactions of Yautja as well as the Hunt.

Hunting Worthy Game: When hunting, the hunter must be sure that his prey is considered game, and lawful to kill. Worthy game: Can defend itself and/or is able to kill the hunter himself, of age (killing children and the elderly is considered the height of bad manners), not linked to other lives (so that removing the prey will not doom another, e.g. pregnant women), and not weakened by diseases.

Failing in the Hunt: Should the hunter fail in one's quest he usually takes his own life, preferring to die in honor than to live in shame. However, some cowards prefer to live in obscurity rather than die. This is considered to be dishonorable and suicide is then "assisted" by an Arbitrator.

Claiming the Kill of Another Hunter: To take the Trophy of another Yautja, living or dead, is considered to be a great insult. This is a crime paid for with abandonment by the clan, leaving the hunter on that world with no equipment whatsoever, including  the loss of both weapons and armor.

Murder of Another Yautja: To kill another Yautja intentionally. This excludes self-defense and killing a foe in a wrestling match to settle a dispute. Murder is the worst crime.

Hunting for Food: When hunting for food, take only the weak. This is to purify the species' line.

Wounded Game: When coming upon game wounded by another hunter, and the prey is dying without sport, show honor to another's kill. If the game still shows sport, it is to be a joint trophy.

Joining Another Hunt: Do not join another's Hunt, or Hunt in their territory, without their permission. All trophies taken in this manner are stolen trophies, and shall be dealt with by the rightful owner.

Mercy: Those who defeat you in a fair Hunt, or who are the victors in a life-threatening hunt (such as a battle with a Xenomorph Queen), and show you mercy are to be considered our equals. You must either kill both them and yourself, or bestow them with a reward.

Code Violations: Those who break the code are renegades, and no longer considered to be a Yautja. They are to be destroyed when encountered.

Never Harm the Ill or Offspring: Yautja are known to have a very strict law on the killing of those pregnant with infants and those who are sick. Usually when they hunt and encounter both, the Yautja is to let them live. The only exception to the rule is if any ill prey pose a threat.

When in a duel with an enemy, you must reveal yourself: It is "hunting ethic" to reveal yourself to your enemy at the climax of a fight.

Wristblade: Melee Weapon Attack: +8 to hit, reach 3 ft., 1 target. Hit: 4d8 + 12 slashing damage

Combistick (Retractable Spear): Melee/Ranged Weapon Attack: +6 to hit, reach 6 ft/30 ft thrown, 1 target. Hit: 6d8 + 16 piercing damage

Netgun: Ranged Weapon Attack: +6 to hit, range 10/40 ft. Hit: 1d8 slashing damage. Successful hit restrains target, 16 dex save ends

Kick: Melee Weapon Attack:: +4 to hit, range 5 ft. Hit: 4d8 bludgeoning damage. Hit of 18-20 knocks target prone

Grappling Hook: Allows user to climb up to 30ft

Language Transmitter: Allows user to understand all spoken languages

Vocal Mimicry:  Allows user to mimic any voice and language, as long as they have heard it previously

Tag: Roll d20. On roll of 16-20, the target is "marked", and can be tracked for 2d6 hours. During that time, the Yautja knows the targets exact location, heath status, and how to reach them. Yautja also gains combat advantage on the first turn if acting on this information to track and attack the target. 

Active Camouflage. At the beginning of each day, roll 2d6. Creature has that many charges of the spell "Invisibility" for the day, that can only be cast on itself. 

Bio-Mask: At the beginning of each day, roll 2d6. Creature has that many charges of the spell "True Seeing" for the day, that can only be cast on itself. All creatures can be seen with this skill, regardless of spells or abilities being used. 

Self-Destruct: After falling to 1/4th health, self-destruct can be used as a reaction. Immediately kills and destroys the creature, and does 8d12 + 40 damage to surrounding area 40ft diameter. Dex save 16, successful save takes 1/2 damage.