At the end of each level you’ll encounter a Mission Cache with an assortment of level-specific wargear to select and upgrade. Keep changing out and upgrading your Wargear to max out your stats.
Supply Caches can be purchased from the Carnage store with Gold. These caches contain typically better quality and rare Wargear that can be purchased with silver. You can also purchase a Supply Cache of Consumable Items (Grenades, Med Kits and Rage Vials).
Blood Ore Caches can be purchased from the Carnage store with Blood Ore. There are 4 Types of Blood Ore caches: Weapons, Armor, Accessories, and Support. You can earn Blood Ore by participating in Fireteam Missions.