Start with the optional actions, not the 49-name checklist.The Steam list confirms the achievement names; the trigger notes below explain what to try and label community-only reports separately.
Hidden and missable checks
Click the horse's eye repeatedly after arriving until the optional achievement triggers.
After finding the milk, use it on the cat before completing the mouse interaction.
During Aldous's exercise, keep clicking until he strains his back.
Use the feather duster on the servant-room portrait until it falls, then reassemble it.
After solving the flower puzzle, use the bouquet on the sheep, then give the used bouquet to Alexandra.
Use the tea leaves on the cat, collect the green powder from the basket by the back door, and add it while serving tea.
Use the bottle on the baby. Community comments suggest pouring for Aldous first is not required.
Watch the back door during Night Watch; the crow-mask visitor is a chance-based appearance.
When the crow appears outside the window, click it.
Place the coffee beans on the servant-room fireplace to roast them before grinding.
Before William wakes, use the feather on his nose and chest.
While cleaning the servant-room bloodstains, brush over the three small figures in the upper-left.
Do not miss the six targets. Community replies confirm the three special shots do not count against the clean run.
Click the bathroom keyhole and wait for the inspection animation to finish.
After Alexandra's bath, click all six panes of the bathroom window.
At the balcony outside the bathroom, drag all three pieces of trash over the railing.
Bring the hammer and magnet, take the left door, use the magnet on the mouse hole for the key, then hit the mouse. A community correction suggests digging first may require the shovel.
After finding the cat, click its head repeatedly until it runs away.
After making the elixir, give one drop to the parrot.
In the servant room, click the table leg beside the cat, then inspect the note that falls out.
Use the knife on the fly, add the dead fly to the soup, and continue until the later hallucination scene.
Adjust the fish shadow to the far-right position in the upstairs portrait, take the fish brooch, and put it on William.
In the dining room, keep clicking the rope in the upper-left until Aldous speaks.
In the cellar, lift Aldous's trouser leg, use the fork to remove the bullets, then close the wound. Community comments say the cloth may be optional.
- 01You Found Him
Return to Waking Aldous and test the reported clock note. The public reports disagree on 3:05 versus 4:05.
- 02Favorite Coffee
Roast the beans on the servant-room fireplace before grinding them; the nearby coffee box answer is 315.
- 03A Perfect Hunt
Keep the six ordinary targets clean. Community replies say the three special shots do not count against the clean run.
Hidden achievement questions
How many achievements are hidden or optional?
Steam lists 49 names, including optional and secret-location names. The exact trigger status varies by action, so this page keeps the official name list separate from community route notes.
Which hidden achievement should I check first?
You Found Him is the clearest current search intent because recent players are asking where to enter the clock note. Start with the Waking Aldous replay and keep the 3:05 / 4:05 conflict visible.
Are all trigger notes replay-verified?
No. The page labels third-party and community instructions rather than presenting every optional action as an official guarantee.