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Servant of the Lake Walkthrough
Walkthrough

Day 3 Walkthrough — Assisting with Alchemy

Servant of the Lake Day 3 walkthrough: the alchemy box sequence, cabinet code 6294, the telescope, the fish placement and every Day 3 hidden achievement.

Last updated 2026-08-14

Light spoilers. This page names rooms, items and characters you meet, but keeps the story beats out of it.

A wooden specimen tray holding bones, organs, a finger, leaves and stones waiting to be sorted
Day 3 — sorting the specimens for the alchemy·Official screenshot, Rusty Lake

Day 3 is the alchemy day. It has the game's last fixed code, the sequence that opens the alchemy boxes, and the telescope that the post-credits secret depends on. It is also the day where community documentation is thinnest — several arrangements are only published as screenshots, and where we cannot describe a pattern in words we say so rather than invent one.

Morning — Looking for the cat

Petting the Cat. Rustie ends up on the maid's lap. Stroke him there. The clue — "Rusty is calm now. More than once, he was loose poor thing." — is a nudge that he has been escaping all game.

Furniture Secrets. Under the kitchen table, click the second leg from the left. There is a note hidden on it.

Morning — Assisting in alchemy

The alchemy box sequence. Nine clicks, alternating sides:

right, right, right, left, right, left, right, right, left

Enter it exactly. This same sequence is required again during the post-credits secret, so keep it.

Animal Testing. You are asked to test the elixir. Give it to the parrot instead. Clue: "Someone else can taste it! Give him some Elixir."

Seasoning to Taste. There is a fly near the cake. Kill it with the knife, then drop it into the soup.

The cabinet code — 6294

Keypad diagram showing the Day 3 cabinet code 6294

The locked cabinet takes 6294. Inside is the telescope.

The telescope is not optional flavour: the final step of the "You've found him!" secret is using it at the window near the dining hall to look at the upper window. If you finish the game without opening this cabinet, you will be coming back for it. See the cabinet code page.

The remaining Day 3 puzzles

Three Day 3 arrangements are documented in the community only as in-game screenshots, with no written pattern to transcribe:

  • The cellar chest configuration (during Dressing for the Evening)
  • The three-bottle arrangement
  • The fish placement for the Final Touch achievement

We are not going to invent coordinates for these. If you are working through them live, the shapes are readable in-game from the clue art in the same room — and if you solve one, a correction sent our way gets published the same day.

Other Day 3 achievements

Risk Assessment. In the dining hall, click the rope at the upper left repeatedly.

First Aid. Click Aldous's leg to treat the wounds, and pull the fork out of his shoulder.

After the credits

Finishing Day 3 rolls the credits — and that is where the last achievement begins, not ends. Select Continue on the title screen, read the note, and follow the eight-step route on the "You've found him!" page. You will need the attic stars (4, 2, 3), the Day 2 bathing tiles, the alchemy sequence above, the clock set to 4:05, and this cabinet's telescope.


That is the main route. The all codes page collects every fixed number in the game on one screen if you just need a lookup.

Still to be confirmed

We could not verify the following against more than one source, so we have left it out rather than guess. This page is updated as confirmations come in.

  • Cellar chest configuration — the source guides only supply a screenshot, not a readable pattern.
  • The three-bottle arrangement in the cellar — same problem, screenshot only.
  • Exact fish position for the Final Touch achievement.
  • Day 3 Afternoon, Evening and Night achievement lists — community coverage is still marked work-in-progress.