Niantic has announced the details of the Pokémon GO Fest: Berlin Global Challenge and Ultra Unlock. The special Global Challenge will kick off alongside the in-person festivities in Berlin on Friday, July 1st, 2022, at 9:00 a.m. (GMT +2).

Pokémon GO Fest: Berlin—Global Challenge and Ultra Unlock!

Trainers,
Get ready! No matter where you are in the world, there will be special activities for you to participate in during this weekend’s in-person Pokémon GO Fest event in Berlin! While those attending Pokémon GO Fest: Berlin are exploring Britzer Garten and participating in event-exclusive activities, Trainers all around the globe will be tasked with completing a Global Challenge! If you’re successful, all Trainers will get to enjoy upgraded versions of upcoming events. Read on for more details!

Pokémon GO Fest 2022: Berlin Ultra Unlock

Friday, July 1, 2022, at 9:00 a.m. to Sunday, July 3, 2022, at 6:00 p.m. (GMT +2)
Friday, July 1, 2022, at 12:00 a.m. to Sunday, July 3, 2022, at 9:00 a.m. PT (GMT –7)

Global Challenge

A special Global Challenge will kick off alongside the in-person festivities in Berlin on Friday, July 1, 2022, at 9:00 a.m. (GMT +2). You can participate from anywhere!

Work together with Trainers around the world to defeat Team GO Rocket members in order to unlock the following.

• 2× Stardust for defeating Team GO Rocket members for the remainder of the Global Challenge period
• Ultra Unlock: Anniversary Event
• Ultra Unlock: Battle Weekend

Collection Challenges

A selection of Pokémon appearing during Pokémon GO Fest: Berlin will also appear in the wild around the world. Work to collect them all in order to complete this Collection Challenge!

Source: https://pokemongolive.com/en/post/gofest2022-berlin-ultraunlockchallenge/