Undusted: Letters from the Past

Undusted: Letters from the Past

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100% Achievements Undusted: Letters from the Past
By miichaellaaa
How to unlock every achievement for Undusted: Letters from the Past.

๐™„๐™‰๐˜พ๐™‡๐™๐˜ฟ๐™€๐™Ž ๐™Ž๐™‹๐™Š๐™„๐™‡๐™€๐™๐™Ž of the story
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๐™Ž๐™๐™Š๐™๐™” ๐˜ผ๐˜พ๐™ƒ๐™„๐™€๐™‘๐™€๐™ˆ๐™€๐™‰๐™๐™Ž


๐€ ๐ƒ๐ฎ๐ฌ๐ญ๐ž๐ ๐Š๐ž๐ฒ

Clear level 1 - Memories Beneath the Dust







๐๐ฎ๐ง๐ง๐ฒ ๐„๐š๐ซ๐ฌ!

Clear level 2 - A Special Photo







๐’๐ก๐š๐ญ๐ญ๐ž๐ซ๐ž๐

Clear level 3 - A Fitting Appearance







๐’๐ก๐ข๐ง๐ข๐ง๐  ๐ข๐ง ๐ญ๐ก๐ž ๐ƒ๐š๐ซ๐ค๐ง๐ž๐ฌ๐ฌ

Clear level 4 - What Glows in the Dark







๐€ ๐‹๐ข๐ญ๐ญ๐ฅ๐ž ๐ƒ๐ข๐ญ๐ญ๐ฒ

Clear level 5 - Achieving Happiness






๐๐จ ๐Œ๐ž๐š๐ง๐ฌ ๐๐จ

Clear level 6 - A Discreet Apology







๐’๐ง๐จ๐ฐ-๐œ๐š๐ฉ๐ฉ๐ž๐

Clear level 7 - Unforgettable Moments







๐‹๐ž๐Ÿ๐ญ ๐๐ž๐ก๐ข๐ง๐

Clear level 8 - Frozen Time







๐ˆ๐ง ๐ƒ๐š๐ซ๐ค๐ง๐ž๐ฌ๐ฌ ๐…๐จ๐ฎ๐ง๐

Clear level 9 - What I Found in the Darkness







๐–๐จ๐ซ๐๐ฌ ๐†๐จ๐ง๐ž ๐€๐ฌ๐ญ๐ซ๐š๐ฒ

Clear level 10 - A Melody of Comfort







๐’๐ก๐จ๐ฎ๐ฅ๐๐ง'๐ญ ๐‡๐š๐ฏ๐ž ๐’๐š๐ข๐ ๐“๐ก๐š๐ญ

Clear level 11 - The Right to Hurt







๐–๐ก๐š๐ญ ๐–๐š๐ฌ ๐‹๐ž๐Ÿ๐ญ ๐ˆ๐ง๐ฌ๐ข๐๐ž

Clear level 12 - A Radiant Dream







๐–๐ก๐š๐ญ ๐‡๐š๐ ๐€๐ฅ๐ฐ๐š๐ฒ๐ฌ ๐๐ž๐ž๐ง ๐“๐ก๐ž๐ซ๐ž

Clear level 13 - Where That Dream Now Resides







๐”๐ง๐ž๐ฑ๐œ๐ž๐ฉ๐ญ๐ข๐จ๐ง๐š๐ฅ

Clear level 14 - Our Last Moment







๐ˆ๐Ÿ ๐ˆ ๐‡๐š๐ ๐‚๐š๐ฅ๐ฅ๐ž๐ ๐…๐ข๐ซ๐ฌ๐ญ

Clear level 15 - Words Left Unsaid







๐๐จ๐ญ๐ก๐ข๐ง๐  ๐‹๐ž๐Ÿ๐ญ ๐”๐ง๐๐ฎ๐ฌ๐ญ๐ž๐

Clear level 16 - A Letter From the Past
ยท ยท โ”€ ยทโœถยท โ”€ ยท ยทยท ยท โ”€ ยทโœถยท โ”€ ยท ยทยท ยท โ”€ ยทโœถยท โ”€ ยท ยท
๐™Š๐™๐™ƒ๐™€๐™ ๐˜ผ๐˜พ๐™ƒ๐™„๐™€๐™‘๐™€๐™ˆ๐™€๐™‰๐™๐™Ž


๐๐š๐ญ๐ข๐ž๐ง๐œ๐ž ๐ข๐ฌ ๐š๐ง ๐€๐ซ๐ญ!

Clean any object using only the air blow gun.



The air blow gun is not the best tool to use as it "overheats" so this will be the most tedious achievement to get. Basically when you use the blow gun, the dial on the gauge will go from green all the way down to red. So you'll have to wait for the blow gun to "cool down" until the dial is back at the green to use it again.
Best level to do this is Level 11 - The Right to Hurt with the gramophone. ONLY use the air blow gun. DO NOT USE the sponge or the toothbrush.





๐€ ๐’๐ก๐ข๐ง๐ข๐ง๐  ๐’๐ญ๐š๐ซ๐ญ

Clean 4 objects to 100%








๐๐ž๐š๐ซ๐ฅ๐ฒ ๐’๐ฉ๐จ๐ญ๐ฅ๐ž๐ฌ๐ฌ

Clean 8 objects to 100%








๐„๐ฏ๐ž๐ซ๐ฒ ๐‹๐š๐ฌ๐ญ ๐’๐ฉ๐ž๐œ๐ค

clean all objects to 100%








๐’๐ข๐ฆ๐ฉ๐ฅ๐ž ๐€๐ง๐ ๐‚๐ฅ๐ž๐š๐ง

Clean all items to 100% using only the sponge and toothbrush



Very easy achievement. Complete every level only using the sponge and toothbrush to 100%. Meaning you CANNOT USE the cloth or air blow gun.
๐™‰๐™Š๐™๐™€: Always check after every level that you have the 100% icon next to your level in the main menu to ensure you've completed it to 100%. There will also be a small brush icon underneath the 100% icon to show that you used only the brush and cloth. The icon won't show if you used any other tool.





๐๐จ ๐‡๐ž๐ฅ๐ฉ ๐๐ž๐ž๐๐ž๐

Achieve 100% in any stage (excluding the tutorial) without using any hints




Simply don't use any hints during any level to obtain this achievement.







๐‹๐ž๐ญ๐ญ๐ž๐ซ๐ฌ ๐…๐ซ๐จ๐ฆ ๐“๐ก๐ž ๐๐š๐ฌ๐ญ!

Complete the story



Simply complete all the levels and view the credits after Level 16 - A Letter from the Past.
ยท ยท โ”€ ยทโœถยท โ”€ ยท ยทยท ยท โ”€ ยทโœถยท โ”€ ยท ยทยท ยท โ”€ ยทโœถยท โ”€ ยท ยท
๐™Ž๐™€๐˜พ๐™๐™€๐™ ๐˜ผ๐˜พ๐™ƒ๐™„๐™€๐™‘๐™€๐™ˆ๐™€๐™‰๐™๐™Ž


๐‚๐ฅ๐ž๐š๐ง ๐€๐ฌ ๐€๐ง ๐Ž๐œ๐š๐ซ๐ข๐ง๐š

Play notes in order on the ocarina



There is a turtle-shaped ocarina during Level 5 - Achieving Happiness, where you have to clean off the holes on the shell and belly of the turtle. There is 7 holes in total you need to expose. To unlock this achievement, you need to play the notes with the toothbrush in a specific order, from lowest note to the highest note.

๐™๐™ƒ๐™€ ๐™Š๐™๐˜ฟ๐™€๐™: (start the turtle with its head up north and shell facing you)
  • Top left, top right, bottom left, bottom right
(Flip turtle so its belly is facing you and head up north)
  • bottom left, bottom right, top





๐’๐ช๐ฎ๐ž๐š๐ค!

Use the cloth



You'll be able to unlock this achievement in Level 7 - Unforgettable Moments.






๐ˆ๐ญ'๐ฌ ๐’๐ญ๐ข๐ฅ๐ฅ ๐๐จ๐ญ ๐–๐จ๐ซ๐ค๐ข๐ง๐ !

When hints are unavailable, try to use them 3 times.



During the course of any level, there's a threshold of 80% that you have to reach in order to unlock the hints system for that level.To use the hints, use the TAB key to highlight areas that need cleaning.
Hit TAB 3 times before 80% to unlock this achievement.






๐‹๐ž๐ญ ๐ˆ๐ญ ๐’๐ง๐จ๐ฐ!

Turn the snow globe into a winter wonderland.



Simply rotate the snow globe in Level 7 - Unforgettable Moments back and forth until the snow starts falling inside the glass.










๐“๐จ๐จ ๐๐ซ๐ž๐ญ๐ญ๐ฒ ๐“๐จ ๐‚๐ฅ๐ž๐š๐ง

Clean off a flower



Simply clean off the flowers on the snowglobe during Level 7 - Unforgettable Moments.







๐–๐ข๐ญ๐ก ๐“๐ก๐ž๐ฌ๐ž ๐‡๐š๐ง๐๐ฌ

Push the pocket watch's button to open it



Simply push down the button at the top of the watch during Level 8 - Frozen Time.








๐„๐œ๐ก๐จ...๐„๐œ๐ก๐จ...๐„๐œ๐ก๐จ...

Listen to the drum echo in the MIDI Controller.



During Level 9 - What I Found in the Darkness, you'll need to turn on the MIDI controller and turn the left knob pointing to the right and the right knob pointing to the left. When that's done, simply hit the square white button on the upper left to make the drum sound that echoes.








๐€๐ข๐ซ ๐ˆ๐ญ ๐Ž๐ฎ๐ญ!

Use the air blow gun



Another tool used to clean objects, however it isn't available in every level. The first time you'll see it will be in Level 11 - The Right to Hurt, then it'll be in most of the subsequent levels.

๐—ก๐—ข๐—ง๐—˜: if you're planning to do the 100% sponge/toothbrush achievement, DO NOT USE the blow gun until after your first play-through.






๐ƒ๐š๐'๐ฌ ๐…๐ข๐ง๐š๐ฅ ๐’๐จ๐ง๐ 

Listen to the music box play



There is a music box/gramophone during Level 11 - The Right to Hurt, where you need to rotate the wind-up key with your hand and let the music play.









๐’๐š๐ฒ ๐‚๐ก๐ž๐ž๐ฌ๐ž!

Accidentally take a photo with the camera



The camera is the object you'll be cleaning in Level 12 - A Radiant Dream.
Slide open the cover off of the lens on the front, then look on the back of the camera for the button with a lightning bolt symbol on it. This'll turn on the camera and will prepare the flash. Simply pull the knob at the top of the camera for the lens to come out all the way and hit the red button at the top to take a picture






๐‹๐ข๐ค๐ž ๐’๐ก๐ž ๐Ž๐ง๐œ๐ž ๐ƒ๐ข๐

Press the typewriter keys 5 times



During Level 14 - Our Last Moment, hit any 5 keys or the same key 5 times at the front of the typewriter.






๐€๐ง ๐„๐ฑ๐œ๐ฎ๐ฌ๐ž ๐“๐จ ๐‚๐š๐ฅ๐ฅ ๐˜๐จ๐ฎ!

Listen to the Easter Egg recorded on the telephone



During Level 15 - Words Left Unsaid, there's a landline phone. Clean off the numbers on the front and interact with the receiver of the phone to flip it over. Dial 217 and wait until a voice message plays.







๐„๐ญ๐œ๐ก๐ž๐ ๐ˆ๐ง ๐‡๐ž๐š๐ซ๐ญ

Clear the hidden object



After completing Level 16 and watching the credits/cinematic, you'll be able to select a new Level 17 - The Pendant. Simply complete the level to obtain the achievement.
12 Comments
miichaellaaa  [author] 16 Feb @ 2:20am 
Yeah Star20 it must've changed. I put both knobs to the left when i did the achievement. I've changed the info. Ty for letting me know
Fauxfire76 3 Feb @ 8:39am 
Can confirm Star20's comment. Left knob pointing right and right knob pointing left.
Star20 30 Jan @ 6:41pm 
Dunno if it was changed, but for "Echo... Echo... Echo..." it wouldn't pop for me until I put the left knob to the right, not both to the left like your guide said.
Dearest Dodo 22 Jan @ 7:34am 
For the ocarina it worked for me while I held down the cleaning while rotating, like in one long row :)
skelebian 21 Jan @ 1:16pm 
i am actually losing my mind trying to get the ocarina achievement why doesnโ€™t it work when i do it :steamsad:
Vampy 4 Jan @ 9:37pm 
For Patience is art, you can also try with the telephone. Camera is not an option.
ั‚ัะฝะบะฐ 22 Nov, 2025 @ 5:27am 
hey!! Thank u so much for this guide! For ๐’๐ข๐ฆ๐ฉ๐ฅ๐ž ๐€๐ง๐ ๐‚๐ฅ๐ž๐š๐ง achivment u can easily check if u cleaned it with brush and sponge as they added icon ( it looks like brush, sponge and plus sign) and it will be located under 100% sign/ If u cleaned ur item and used anything else there would be no sign!
Bridelhack 20 Nov, 2025 @ 5:51am 
Thank you especially for your time and this guide. :goodjob:
miichaellaaa  [author] 20 Nov, 2025 @ 5:18am 
Thanks bunnypause and Bridelhack. I'll change it now
Elithe 19 Nov, 2025 @ 9:18am 
wish i read the comments before spending ages doing the camera.. im in pain LOL