When the Rocket Pass is active, players will progress through the tier system by leveling up, earning one tier per level. The more tiers earned, the more items will be unlocked. Premium rewards can be unlocked sooner rather than later by purchasing the tiers with Keys — which are available to buy with real-world money.If a player unlocks all of the tiers, then they will begin earing ‘Pro Tiers’ if they have acquired the premium upgrade. Psyonix is still finalizing the total number of tiers that will be available in the first pass. They estimate the total time to complete each pass to be about 100 hours.