Achievements Guide

The Mermaid Mask ships with 21 Steam achievements mirrored as PlayStation 5 trophies—covering story progression, puzzle mastery, thorough exploration of ~fifty clues, suspicion interviews, and optional flavor content. None are missable in permanent fail sense due to post-chapter revisit rules, though point-of-no-return warning before finale reconstruction suggests cleaning Evidence Checklist beforehand. Achievement details below may need confirmation if day-one patches adjust counters; community verification ongoing on Steam forums.

Story and Progression Achievements

First Footing — Complete Stonetop Inn prologue. Descent — Board Mortuga Submarine. Power Restored — Solve switchboard plugs. Theatre Unlocked — Enter Illusion Theatre crime scene. Accusation — Complete final reconstruction (no spoiler specifics). Mermaid's Truth — View true ending epilogue scene.

Exploration and Clue Achievements

Keen Eye — Inspect 25 clues. Master Archivist — Collect all ~50 clues. Innkeeper's Favorite — Exhaust Stonetop Inn optional dialogue. Surface Detective — Complete all town square optional evidence. Grotto Diver — Fully inspect Airlock Grotto post-power. Dream Walker — Enter Dream Chamber optional room.

Puzzle and Interview Achievements

Dial Turner — Solve Mess Hall dials without hints. Lens Focused — Complete card lens puzzle first attempt. Shipshape Electrician — Wire switchboard under par time (~3 minutes). True Navigator — Solve compass pinboard. Pressing Matters — Max suspicion dialogue on all eight suspects. Hintless — Finish game without keyhole hints (challenge). Speed Hull — Complete story under 10 hours (skilled). Piggy Banker — Open payroll locker. Shape Shifter — Open Dream Chamber safe. Grimoire Veteran — Platinum-style completion: all above plus secret easter egg in Captain's Cabin (confirm patch notes).

Use keyhole icon freely if not pursuing Hintless—see hint guide. Track progress alongside Suspicion Tracker for interview achievements.