This Moomin: Midsummer Madness achievements page lists 12 Steam trophies for app 4463520. Six are chapter clears. Five are extras you can miss if you never go back. One (Jack of All Games) wants every minigame completed. Percentages below were public on 2026-11-15 and will move. Switch has no matching trophy list in the materials we used.
No trainer, no cracked list, no invented hidden names. Verified November 15, 2026.
Achievement
How
Public % (will change)
About a Bark Boat and a Volcano
Complete Chapter 1
81.9%
About Diving for Breakfast
Complete Chapter 2
50.8%
About Living in a Haunted House
Complete Chapter 3
24.7%
About the Dangers of Midsummer
Complete Chapter 4
14.5%
About Sensitive Feet and Souls
Complete Chapter 5
10.8%
About Punishment and Reward
Complete Chapter 6
9.0%
Jack of All Games
Complete all minigames
5.4%
Garden Harmony
Use the swing in the garden
81.4%
Cut the Corners
Use the magician’s box one more time
21.7%
Summer Bed
Jump in and out of the haystack 5 times
5.9%
Squish Squash!
Push away 15 jellyfish
9.8%
All Small Beasts...
Concert for Police Hemulen, just for fun
4.5%
Which achievements are just the six chapters?
The six “About …” trophies fire when you finish the matching chapter on the walkthrough. They are not hidden. If Chapter 3’s trophy is the cliff in the percentages, that matches public stuck reports on the theater — use Chapter 3.
Story trophies do not require extras. You can end Chapter 6 without Garden Harmony if you never touched the swing, though most players click it in Chapter 1 because it sits in the garden.
Which Moomin Midsummer Madness achievements are missable extras?
Garden Harmony: use the garden swing. High unlock rate — do it while the valley is still open. Cut the Corners: use the magician’s box one more time after you already used it as a shortcut (Chapter 3 striped box). Go back and ride it again. Summer Bed: enter and leave the haystack five times in the Chapter 4 hay area. Squish Squash!: push 15 jellyfish (underwater theater / dive screens). All Small Beasts...: play a concert for Police Hemulen for fun, not as the required hat theft. Keep the harmonica after the hat; that is the likely tool — exact notes Unverified beyond the trophy description.
None of these need a second save if you can still walk to the screen. If a chapter gate closed a room, that interaction is Unverified; replay the chapter from a save if your only file is post-credits.
Then clear leftover minigames
Matched by build plan, shared topics, and guide progression — not random related links.
Complete all minigames. That is the lowest-percentage skill trophy after the Hemulen concert. Use the minigames list and avoid Skip if you want this pop. Public description does not list each board by internal ID; if a Skip board still counts as complete, we have not confirmed it. Play the boards.
Emma’s music, attic mazes, weather, gears, boat, frog, poster, music-box stars, bun launches, and knot sun are the named set from walkthroughs. If the trophy does not fire, replay any board you Skipped before assuming a hidden 13th game.
How should I track a 100% run?
One story pass with extras in mind: swing in Ch.1, extra magician-box ride in Ch.3, jellyfish pushes whenever you dive, hay hops in Ch.4, concert after you have the harmonica in Ch.6, no Skip on boards. Steam overlay tracks the 12 names. This wiki will not host pirate percentage sheets.
Next: if a trophy is a chapter name, open the walkthrough. If it is a board, open minigames. Percentages on this Moomin: Midsummer Madness achievements list came from a public Steam tracker snapshot dated around launch week. They are a difficulty hint, not a live API. Garden Harmony sitting near Chapter 1’s unlock rate means most people click the swing without a guide. Summer Bed and All Small Beasts... sitting under 6% means the notebook will never force you to hop hay or play a bonus concert. Do those on the same save if the screens are still open. This wiki will not host a cracked achievement manager, a Steam Achievement Manager file, or a “unlock all” script. If a trophy does not pop, replay the verb in-game (swing, extra box ride, fifteen jellyfish pushes) before assuming the list is wrong. Chapter trophies use the official “About …” names that also title the six story beats — useful when you are searching without remembering the number.
What next
Next: clear leftover boards on minigames, or finish missing chapters on the walkthrough.
FAQ
Are there more than 12?
Steam list we used has 12. DLC would be a new row later.
Switch trophies?
Not listed like Steam Achievements. Play for the story on Nintendo.
Do I need two playthroughs?
Not for story. Extras may need a return visit or a second save if rooms closed — Unverified.
Related pages
Matched by build plan, shared topics, and guide progression — not random related links.
