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Upgrades
Armors and weapons
To grow in strength you need to upgrade your equipment, the maximum armor upgrade level is 40 for each part, but only Celestial Set can reach this level, each armor has its own upgrade cap, check sets
First Stage
Up to level +10 you can use Upgrade Stones or Catchup Stones. Acquired from monster essences, archlight crates, wild bosses, quests.
Second Stage
To upgrade your gear from +11 to +20 you have to use Legendary Stones. Acquired from monster essences, quests, sigils and transmuting upgrade stones or soul and rune soils.
Third Stage
To upgrade your gear from +21 to +30 you have to use Awakened Stones. Acquired from monster essences, quests, sigils and transmuting Legendary Stones.
Last Stage
To upgrade your gear from +31 to +40 you have to use Relic Stones. Acquired from monster essences, quests, sigils and transmuting Awakened Stones.