Weapon Mastery Trophy in Clair Obscur: Expedition 33

A weapon reaches level 33 at the Curator. Levels 1–3 take Chroma Catalysts, 4–9 Polished, 10–19 Resplendent and 20–32 Grandiose ones, all common. Level 33 takes a Perfect Chroma Catalyst, which only endgame fights give: the Serpenphare (Hidden trophyÀ On), the Flying Manor's bosses and Clea (Hidden trophyClea), the Endless Tower's last fight and Simon. Spend the first one on the weapon you use most.