Each of the Brawlers in the game has their own individual pool of Power Points that must be filled up in order for them to level up. Once this bar has been filled up you then need to spend the appropriate number of Coins to unlock the level up. You can also upgrade or enhance your Brawlers using Elixirs which are items that are specifically used to enhance a Brawler's base stats, this includes their Health, Attack, and Super abilities.
Power Points
You will get Power Points when you open Brawl Boxes. The actual number of Power Points you recieve per Brawl Box is random. It is also possible to purchase Power Points per Brawler using real money from the in-game Shop.
Elixirs
You can get elixers as random drops from Brawl Boxes. The amount of elixirs you get is also random, it is possible to get anything from 1-10 pieces from a single Brawl Box.
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