Follow Day 1 → Day 2 → Day 3. Use the code sheet for locks, then use the visual steps when the problem is an item order or a click target. Screenshot captions identify Steam Community material; editorial illustrations are atmosphere only.

Three days, one working order
The code sheet
| Lock / puzzle | Answer | Where it appears |
|---|---|---|
| Coffee box | 315 | Day 2 — roast the beans on top of the stove before grinding. |
| Hunting shed | 91276 | Day 2 — the shed lock after the hunt setup. |
| Bath briefcase | 281 | Day 2 — use it during the bath sequence. |
| Day 3 cabinet | 2451 | Day 3 — lab sequence. |
| Day 3 left/right box | LLRRLR | Day 3 — enter the directions in order. |
Arrive, prepare, and learn the house.
- 01Start with the arrival actions. The Steam guide reports the horse interaction as a ten-click optional check.
- 02Clear the morning duties. Breakfast, waking Aldous, and the first house interactions sit before reception.
- 03Inspect before rushing. Portrait cleaning and the bouquet detour are optional achievement checks.
- 04Finish the night sequence. Check the white door and the attic/crow interactions before Day 2.
Prepare coffee, hunt, wash, and inspect.
- 01Roast before grinding. Green beans are not enough; roast them on the stove first.
- 02Use coffee box code
315. If the scene does not advance, return to the item-order step instead of trying another code. - 03Save the perfect-run attempt. The community route describes six targets with nine shots; treat it as an optional achievement check.
- 04Finish bath and cellar checks. Use
281for the briefcase, then5:00 → 8:00 → 10:00in the cellar.
Find the cat, assist in alchemy, and prepare dinner.

- 01Find the cat first. Tap the cat’s head until it runs away for the optional check.
- 02Open the lab cabinet with
2451. Recipe order: egg first, then 1 juice, 1 acid, 1 oil, and 3 blood. - 03Use
LLRRLRat the left/right box. Keep this separate from the disputed secret-ending branch. - 04Keep dinner as a checkpoint. Public coverage still has a replay gap around the full dinner sequence.
A few route questions
How long is Servant of the Lake?
Official launch coverage describes the main story as roughly four to five hours; puzzle speed and optional achievements change the total.
Where is the Day 2 coffee code?
The launch-build walkthrough sources report 315 for the coffee box. The walkthrough notes that the beans should be roasted before grinding.
Is the Day 3 dinner route fully verified here?
Not yet. The source coverage used for this MVP still signals a gap around dinner, so this guide labels that segment replay pending.

