Makin' more Friends Trophy in Yoku's Island Express
Makin' more Friends
Befriend a Sootling
How to unlock Makin' more Friends
Story-related and unmissable.
Fairly late in the game, you'll obtain the Sootling Leash - your next objective will then be to find a 'Sootling' creature with which you can use the leash (which then grants a grappling hook-style ability). Upon locating the Sootling, you'll earn this trophy.