How it works
Milestones are themed tracks in the Quests menu. Finishing harder tasks raises your rank in a track, and ranks pay items and stronger buffs. Some also pay exclusive titles and pets.
Each track has nine ranks, and a rank can have up to three tiers: Unranked, Bronze, Silver, 
Gold, Platinum, Super, Ultimate, Infinity and Omega.
History
Added to the game.
