Gunslinger
The Solar-powered Gunslinger is a solid beginner subclass geared more for seeking out higher ground to pick enemies off while building up your special power, the Golden Gun (more on that later).
There are three different grenade types within each of the game’s subclasses. For Gunslinger, you’ll start with a traditional Incendiary grenade. Next up is the Swarm grenade, which explodes on impact and releases smaller drones that seek out any lingering enemies. Finally, the Tripmine grenade acts a proximity grenade/mine, which comes in handy when playing Control missions in the Crucible. You can throw a Tripmine down to guard your flank or nearby doorways for unsuspecting enemies to run into, though they do explode on their own after a short time if nothing hits their laser trip sensors.
Like all three character classes, there are a bevy of different modifier upgrades within each subclass to personalize your play style. Do you like having quicker cooldowns on your grenade and throwing knife? Do you prefer a more powerful Golden Gun? How about increased weapon stability following precision kills?
In all, there are five different trees with three modifiers each where, as you level up, you can customize your guardian to best fit your play style. You can only choose one modifier on each tree.
There also are three other trees with four options each: one to upgrade your jumping abilities, a Golden Gun-specific tree, and your knife-throwing tree, which is perhaps the best part about playing as a Gunslinger.
Taking down enemies with the class and subclass-specific throwing knife is incredibly satisfying but your aim must be precise. Nothing is more frustrating than just missing a great knife takedown, forcing you to wait through a cooldown period before using it again. Some enemies are easier to hit than others. The more straight-forward moving Vex are the easiest to hit with a knife, while other enemies zig and zag — especially the other guardians you’ll face off against in the Crucible. 
Upgrading the throwing knife spices things up even further. The first throwing knife modifier is the “Circle of Light” mod, which grants the guardian extended time with the Golden Gun if a throwing knife kill is made with the Golden Gun out.
Next up is the Incendiary Blade, which sets enemies on fire for a short time. This mod is especially handy in the Crucible if you’re looking for Post Mortem badges to complete a bounty.
The final knife upgrade negates the cooldown if a precision kill is scored — so aim for the face (unless it’s a Vex)!
One of the trickier aspects of the throwing knife is being close enough to be accurate but far enough away to avoid a melee swipe instead of a throw. This is especially true when playing in the Crucible. I can’t tell you how many times I had a knife throw ready to pierce a charging enemy, only to have them get too close while I was lining up my throw and causing me to hit them with a melee — which doesn’t usually kill enemies with one blow — only to be gunned down as I try to raise my gun back up for a kill shot.
