Within Nonstop Knight 2 there are four classes of items, grouped by their rarity. These are Common Items, Rare Items, Epic Items, and Legendary Items. Furthermore, within each class, there are armor collections and weapons.
Your character can have 3 separate equipment load-outs and you can switch between load-outs according to your preference and needs in different Game Modes.
All items of Epic and Legendary status will have unique perks that can be viewed by tapping on the [i] icon. Equipping two items in the same collection will activate the perk and each subsequent item equipped will increase the power of the perk. The exception to this are Epic and Legendary Uniques which need only be equipped by themselves for the perk to activate. You can view your collections by tapping the crafting icon in the player profile window.