There are currently 24 weapons in Orion: Dino Horde. There are 4 categories of weapons: sidearms, secondaries, primaries, and adrenaline weapons. All weapons are purchased at the Armory.
Main Article: Sidearms
Sidearms are the most basic weapons in the game, and Carriers always start with one. There are 6 pistols: 3 are default for classes, and 3 are unlockable for loadouts. Unlockable pistols are available when the class reaches level 5. If a Carrier is knocked down by a dino, the currently carried sidearm is drawn for the "Fight For Your Life." A sidearm can not run out of ammunition, and sidearms can not be dropped.
Main Article: Secondary Weapons
Secondary weapons are more expensive than sidearms, but also more powerful than sidearms. There are 5 secondary weapons: the Ion Blade, the Trek-13 Automatic Shotgun, and 3 that are unlockable for loadouts. Unlockable secondaries are available when the class reaches level 20.
Main Article: Primary Weapons
Primary weapons are the second most powerful weapons in the game, and are also the second most pricey weapons in the game. There are 6 primaries in the game: 3 unlockables and 3 that are only available for purchase in the armory. Unlockable primaries are available when the class reaches level 30.
Main Article: Adrenaline Weapons
Adrenaline Weapons are the priciest and most powerful weapons in the game. There are 7 Adrenaline Weapons: 6 class-based and 1 all-class. The class-based weapons can be purchased by any class, provided they have the VIP augmentation.
Main Article: Grenades
There are 3 grenade types, with one grenade per class. Although each class starts with one type by default, different grenade types can be purchased at the Armory.