Metaverse Achievement in Rocket League
Equip the Halo Topper and win a match on Starbase ARC
How to unlock Metaverse
Once you have the Halo topper unlocked, head to the garage and equip it to a vehicle.
Now head to Exhibition and select the Starbase Arc arena, team size 1v1, no bots, and in mutator settings make the max score 1 goal. Now just score on the empty net.