This Seeking Tech guide will show you how to earn the Sticky Fingers trophy in Jeanne d’Arc. To get this to unlock, you will need to steal 10 skill stones from enemies.
You won’t be able to steal these stones until you beat the 9th stage of the campaign and get the Skill Shakedown ability as a reward.
Equip the skill to Colet, and then make sure you use it on enemies during battles. Eventually, you should be able to get the Sticky Fingers trophy.