When you choose your clan, you will start with a passive ability unique to each clan. You can then unlock abilities from the Ability Tree, starting with your chosen clan.
Each ability requires spending Ability Points to unlock, which are earned from completing missions, combat, and exploration. At the peak of the Ability Tree, you can unlock the clan Perk, a reward to those dedicated enough to unlock all of the abilities for a clan, giving a permanent passive upgrade.
Silence of Death
Clan Passive: All your actions become entirely silent for a period after feeding.
Mute
Silence an enemy/civilian. Any sounds they produce, from screams to gunfire, are completely undetectable to others.
Split Second
Move so fast that time appears to stop around you.
Bladed Hand
Slash swiftly in front of you, beheading mortal opponents.
Unseen Aura
Become temporarily invisible to enemies and civilians. Note: You can still be heard unless combined with Silence of Death.
Unseen Passage
Clan Perk: Can remain crouched whilst sprinting.