If you’re trying to unlock every achievement in Fortune Mill, you may have noticed a hidden achievement called Metal Bottle. I managed to unlock it by repeatedly destroying a specific bottle with my darts until the correct version appeared. In this guide, I’ll show you exactly which bottle to target and what you need to do.
How to Unlock the Metal Bottle – Secret Achievement
To earn the secret Metal Bottle achievement, I repeatedly threw darts at a bottle and destroyed it over and over until a metal bottle spawned in its place.
Once the metal bottle appeared, the secret achievement unlocked.
Which Bottle Should I Destroy?
The bottle you need to target is the one located above the dartboard.
Keep hitting and destroying that bottle with your darts until the metal version appears. After it spawns, you’ll receive the Metal Bottle achievement.