Weapon

As a first-person shooter, Destiny features numerous weapons for the player to combat enemies with. Each weapon type contains exotic variants, which are given a unique name and which have additional abilities and/or effects. Such notable "exotics" include the Fate of All Fools, Thunderlord, Closing Time, Red Death, and Gjallarhorn, along with Thorn, Pocket Infinity, and Super Good Advice. Scopes and various sights have also been seen. Each Guardian will have 3 weapon slots to be able to carry a Primary, Special, and Heavy Weapon on their person, with the potential to store and access up to 12 additional weapons of each type. The primary slot is for the weapon used most frequently, such as auto rifles, scout rifles, pulse rifles, and hand cannons. The secondary slot is for specialty weapons that are highly situational such as shotguns, fusion rifles, and sniper rifles. The third slot is for heavy weapons such as rocket launchers and heavy machine guns. Ammo for the weapons will be color coded by slot type; white for primary, green for special, and purple for heavy. Purple is the rarest ammo to find, encouraging players to use heavy weapons sparingly.

Many of the weapons in Destiny carry "implied fiction," bearing details of its creator, where it came from and the sort of person who'd wield it.

Rarity of the weapon as well as armor is color coordinated into four tiers: Basic (white), Uncommon (green), Rare (blue) Legendary (purple), and Exotic (gold).

Certain weapons are infused with different energies - thermal damage, arc damage, and void damage.

It should be noted that while players are able to switch their weapon selection at any time through the menu, this comes at the penalty of losing both special weapon ammo and/or heavy weapon ammo for the switched guns. This encourages players to plan their weapon selection in advance before entering a firefight.

Weapon Upgrades
Weapons in Destiny are capable of being upgraded by players. Each weapon has an upgrade path that allows certain capabilities and improvements to be applied to the weapon, at the cost of a certain amount of Glimmer along with a pre-determined number of weapon kits and the application of one or more talent points. Additionally, it has been revealed that while certain weapons will have a more or less "linear" upgrade tree, some weapon trees will diverge into different "branches", allowing for certain weapons to have more specialized applications as well as making it impossible to obtain all upgrades for that particular weapon.

Assault rifles

 * Monte Carlo (exotic)

Auto rifles

 * Arcus Regime†
 * Carte Blanche S.1
 * Cydonia-AR2
 * Doctor Nope
 * Galahad-B
 * Galahad-E
 * Khostov 7G-02
 * Marshal-A
 * Marshal-A1
 * Sanctuary No. 2
 * Sahara AR-2
 * Shingen - B
 * Suros Regime

Pulse rifles

 * PSI Umbra I
 * PSI Umbra III
 * Pulsar MSE
 * Red Death (exotic) †
 * Trifecta S.2
 * Viper P3

Scout rifles

 * Jigoku SR3
 * Mitternacht SR3
 * Monitor S11
 * Pompeii-LR2
 * Singularity S.3
 * Trax Callum I
 * Trax Callum II-A
 * Valka SR3

Hand cannons

 * Duke MK. 10
 * Duke MK.44 (superior) †
 * Hawkmoon (exotic)
 * Maverick Mk. 32
 * Peccadillo's Grace
 * Rambler MK.33
 * Searcher MK. 20
 * Thorn (exotic)

Shotguns

 * Graviton ESE
 * Invictive
 * Preacher MK.22
 * SG-Scattercast
 * Silver Dollar MK.35†
 * Suros MKB-21

Sniper rifles

 * 13098V Incognito
 * Calcutta-LR2A
 * Closing Time (exotic) †
 * Gozen-c
 * Hieracon-LR2
 * Trajan-B

Fusion rifles

 * Conduit F3†
 * Copperhead Mk. 32
 * Helios FR5
 * Nox Cantor II
 * Pocket Infinity (exotic)
 * Prost FR2
 * SK5 Type-Null
 * Solas FR3
 * Tengoku FR2A

Machineguns

 * BTRD-345
 * Darius-B
 * Gravesend MK.28
 * Thunderlord (exotic)†
 * Super Good Advice (exotic)

Rail guns

 * TBA

Rocket launchers

 * Butcher-SA/3
 * Despot SA/5
 * Gjallarhorn (exotic) †
 * Harbinger

Grenades

 * Flashbang grenade
 * Pulse grenade

Melee Weapons

 * Hunter's knife†

Uncategorized weapons

 * Cudgel of Xanthor (Uncategorized weapon)
 * Fate of All Fools (Uncategorized exotic weapon)
 * Hardlight
 * Last Word
 * Red River Mk. 24

† - Shown in the Destiny Drawing Board, and thereby subject to being changed or removed in the final game.

Fallen

 * Shock Pistol
 * Shock Dagger
 * Shock Rifle
 * Shrapnel Rifle

Hive

 * Arc Rifle
 * Hive Shredder

List of appearances

 * The Law Of The Jungle
 * Destiny