Striker is a Titan subclass from the original Destiny (Destiny 1), powered by Arc Light. Below are its abilities and every choice in its skill tree, as listed in the game files.
Core abilities
Deliver a shattering blow with your most reliable sidearm: your right fist.
Run faster.
Jump and then press again while in the air to activate Lift.
Smash the ground and dissolve nearby enemies in a maelstrom of Arc Light.
A punishing melee attack that deals bonus damage.
Skill tree choices
Choice 1 (pick one)
An explosive grenade that disorients the enemies it damages.
A grenade that periodically damages enemies inside its explosion radius.
A grenade that sticks to any surface, periodically emitting bolts of lightning.
Choice 2 (pick one)
Upgrades Lift to travel to greater heights.
Upgrades Lift for better directional control while in the air.
Upgrades Lift to provide a strong initial burst of momentum.
Choice 3 (pick one)
Fist of Havoc leaves a damage-dealing field in its wake.
After jumping, Fist of Havoc can be aimed at enemies below.
Fist of Havoc unleashes a wave of devastating energy which travels along the ground.
Choice 4 (pick one)
Reduced Storm Fist cooldown. Hits with Storm Fist have a chance to immediately reset its cooldown.
Hits with Storm Fist deal area of effect damage around the target.
Kills with Storm Fist significantly reduce the cooldown of Fist of Havoc.
Choice 5 (pick one)
Training focused on battle recovery and toughness.
Training focused on speed and toughness.
Training focused on battle recovery and speed.
Choice 6 (pick one)
Sprint faster, and sprinting increases the leap distance of Fist of Havoc.
Increases the duration of Pulse Grenade, Lightning Grenade, and Aftermath.
Kills with Storm Fist or Shoulder Charge immediately trigger health regeneration.
Choice 7 (pick one)
Training focused on all attributes.
Training focused on maximum battle recovery.
Training focused on raw speed.
Choice 8 (pick one)
You are harder to kill while using Fist of Havoc.
After sprinting for a short time, press to unleash a devastating melee attack.
After sprinting for a short time, gain a protective shield.
Grouped the way the game groups them: in each group you can have one option active at a time.