You can unlock specific "XP" and rare rewards by completing milestones, such as: Ride Armor Master: Collect all Ride Armor for Kainen. Story of Ignit/Kainen:
"Mystic Guardian redeem code [current month/year]" – some content creators share active codes in the description or comments. mystic guardian redeem code
: Open Mystic Guardian on your Android or iOS device. You can unlock specific "XP" and rare rewards