Voice of the Bell

Donate the money to repair Old Kutna's bell (around 2,000 groschen), then let time pass - the bell rings a few in-game days later (around noon) and the trophy fires when you're there to hear it. Missable as part of the DLC's guild-activity set, so make the donation while the task's available and then remember to come back after a few days to witness it ringing rather than wandering off and forgetting.