Gunslinger is a Hunter subclass from the original Destiny (Destiny 1), powered by Solar Light. Below are its abilities and every choice in its skill tree, as listed in the game files.
Core abilities
Use your blade.
Run faster.
Jump a second time after leaving the ground.
Summon a flaming pistol which disintegrates enemies with Solar Light.
Throw a knife from a distance.
Skill tree choices
Choice 1 (pick one)
An explosive grenade that catches enemies on fire, causing additional damage over time.
A grenade which detonates on impact, releasing multiple drones that seek nearby enemies.
An explosive grenade that sticks to surfaces and detonates when enemies pass through its laser trigger.
Choice 2 (pick one)
Upgrades Double Jump for better directional control while in the air.
Upgrades Double Jump with a third jump.
Upgrades Double Jump for even greater height.
Choice 3 (pick one)
Significantly increases the accuracy and damage of Golden Gun.
Killing enemies with Golden Gun causes them to explode.
Reduces the cooldown of Golden Gun, allowing it to be used more often.
Choice 4 (pick one)
Precision kills with Throwing Knife reduce Golden Gun's cooldown.
Throwing Knife catches enemies on fire, dealing additional damage over time.
Precision kills with Throwing Knife immediately resets its cooldown.
Choice 5 (pick one)
Training focused on toughness and speed.
Training focused on battle recovery and speed.
Training focused on battle recovery and toughness.
Choice 6 (pick one)
Picking up ammo reduces the cooldown of your grenade and Throwing Knife.
Golden Gun overpenetrates and can damage multiple targets.
Precision kills increase weapon stability. Stacks up to 3 times.
Choice 7 (pick one)
Training focused on all attributes.
Training focused on toughness at all costs.
Training focused on maximum battle recovery.
Choice 8 (pick one)
Precision kills increase weapon reload speed. Stacks up to 3 times.
Increases the range of Golden Gun.
Gain an additional Throwing Knife.
Grouped the way the game groups them: in each group you can have one option active at a time.