Not every Collection Challenge in Pokémon Go works the same. There are some you need to think outside the box or work with other players to complete. For the Shield Path Trade Challenge, you’ll be speaking with players to receive specific Pokémon for this challenge.
It all comes down to speaking with other players and making sure you can both receive a good exchange for these deals. Because you grabbed the Shield Path, you may want to track down a player who chose the Sword path during the Legendary Heroes event, where you can both help out each other to complete specific challenges. You also need to make sure you have enough Stardust for the trade. Here’s what you need to know about how to complete the Pokémon Go Shield Path Trade Collection Challenge.