3.9.1. Characters Level Upgrade
When a character is obtained from the chest or bought from the Metarun game store has the first level, but if purchased from the secondary market, the character level can be higher. The current rarity of the skin determines the character's maximum level.
Each class, character level upgrade to the next level, required some amount of soft currency(GOLD), hard currency(OPAL), and MetaRun native token ($MRUN).
According to the following principle, the character level increases:
x1 * GOLD + x2 * OPAL + x3 * $MRUN = Current Level +1