Servant of the Lake Walkthrough: Full Game & Secrets

Full-game spoiler warning: This page reveals every main-story puzzle and ending, hidden-achievement interactions, and the complete Kate's brother secret quest.

This complete English edition preserves all 119 verified steps from the Chinese walkthrough. It covers the 87-step main route across Days 1–3, 23 hidden-achievement steps, and the 9-step post-ending quest. Every numbered instruction is paired with the exact gameplay frame used to verify it.

The screenshots come from a Chinese-language playthrough, so some on-screen text is Chinese. The item positions, symbols, inputs, and puzzle actions are the same; use the English instruction above each image.

How to use this complete walkthrough

• Follow P01, P02, and P03 in order for the full main story.
• Use P04, P05, and P06 for the hidden interactions on Days 1, 2, and 3.
• Complete P07 after the ending to solve Kate's brother quest.
• If a scene does not advance, finish the current notebook duty and exhaust the active character's dialogue before moving on.
• On touch devices, drag inventory items directly onto the visible hotspot and let each animation finish.

Quick answers and puzzle codes

• Striped cups: 1, 2, 3, 5
• Aldous's wake-up time: 7:00
• Exercise: Left, Right, Down, Right, Right, Down
• Day 1 suitcase: 374
• Day 1 wine bottle: 1753
• Day 2 room lock: 315
• Body-part reaction lock: 921276
• Bathing suitcase: 281
• Pocket watches: 8:00, 4:00, 10:00
• Day 3 direction lock: Left, Left, Right, Right, Left, Right
• Banquet wine bottle: 1643
• Late-story number lock: 358
• Secret maze and floor box: Right, Right, Right, Left, Right, Left
• Telescope chest: 6294

Day 1 — Arrival, chores, guests, and night patrol

Day 1 begins at the estate gate, continues through Aldous's morning routine and the guests' arrival, and ends with the first night patrol.

Gameplay source for this section: video part 1.

P01-01 — Solve the striped-cup box

Step 1. Arrange the cups by the number of stripes on each cup, from fewest to most: 1, 2, 3, 5. The correct order opens the box.

P01-02 — Take the coin

Step 2. Collect the coin from the newly opened box; you will need it for the carriage.

P01-03 — Feed the horse

Step 3. Give the carrot to the horse, then interact with the carriage to move the arrival sequence forward.

P01-04 — Find the floor-box key

Step 4. After the carriage leaves, pick up the crowbar. Use it on the loose ground panel and take the key hidden below.

P01-05 — Enter the estate

Step 5. Use the key on the front door, unlock it, and enter the Vanderboom house.

P01-06 — Open the task notebook

Step 6. Accept the notebook and open it. It keeps track of your current duties and collected records.

P01-07 — Read Aldous's breakfast instructions

Step 7. Read the breakfast note: put the pot on the stove, add milk and oats, then heat the porridge. The note also reminds you to feed Rustie.

P01-08 — Cook the porridge

Step 8. Light the stove with the matches, place the pot on top, then add the oats and milk to cook the porridge.

P01-09 — Open the symbol box

Step 9. Match the symbols you saw earlier to the corresponding edges of the box. Take the razor and bowl from inside.

P01-10 — Set the alarm for 7:00

Step 10. Attach the paper hand to the alarm clock and turn the hands until the clock reads 7:00.

P01-11 — Follow Aldous's morning routine

Step 11. Use the order shown on the desk: open the curtains, shave Aldous, serve breakfast, complete his exercise, and dress him.

P01-12 — Get the drawer key from the crow

Step 12. Feed the severed ear to the crow, take the small key it gives you, and use that key on the drawer.

P01-13 — Clean Aldous's ear

Step 13. Use the cloth to wipe the blood from Aldous's ear before continuing his routine.

P01-14 — Serve the porridge

Step 14. Give Aldous the bowl first, then the spoon, and finally pour the cooked porridge into the bowl.

P01-15 — Enter the exercise pattern

Step 15. During the exercise, enter the six directions in this exact order: Left, Right, Down, Right, Right, Down.

P01-16 — Warm Aldous's feet

Step 16. Put the slippers on Aldous, use a match to warm his feet, and then complete the exercise sequence once more.

P01-17 — Dust the portraits

Step 17. After the next duty appears, use the feather duster to clean the portraits.

P01-18 — Solve the candle mechanism

Step 18. Find the missing candle, place it with the others, and light the candles in the order shown by the clue.

P01-19 — Complete the garden animal puzzle

Step 19. Move the animals through the garden mechanism until the arrangement is accepted, then collect the stone fragment.

P01-20 — Build the flower

Step 20. Fit the petals, leaves, and center together by following how each shape extends into the next. Take the completed flower.

P01-21 — Order the nested objects by size

Step 21. Arrange the tree, branch, nest, egg, bird, house, and cabinet from the size clues. The solved mechanism gives you a game piece.

P01-22 — Open the suitcase with 374

Step 22. Read the suitcase clue from left to center to right, enter 374, and open the case.

P01-23 — Pack the suitcase

Step 23. Fit every item into the suitcase by shape, like a packing puzzle. Collect the coin and banknote revealed by the solution.

P01-24 — Make tea for Alexandra

Step 24. Pour hot water into the cup, then add tea leaves, sugar, and milk before giving the tea to Alexandra.

P01-25 — Repair the broken teacup

Step 25. Reassemble the shattered cup, glue the pieces together, and prepare the tea again.

P01-26 — Guide the bird through the branches

Step 26. Adjust each branch to point left or right so the bird can follow the route. Collect the item released at the end.

P01-27 — Solve the wine-bottle code

Step 27. Arrange the bottle fragments so they read 1753, then take the wine.

P01-28 — Follow William's gaze

Step 28. Watch where William looks and click the matching position each time to complete the closed-eyes or pretending-to-sleep sequence.

P01-29 — Complete the night patrol

Step 29. Ring the bell when you confirm the disturbance, then return to the corridor and continue the patrol.

P01-30 — Finish the nine-square line puzzle

Step 30. Connect the patterns across the 3×3 grid, collect the small fish figurine, and use it to continue opening the drawer mechanism.

Day 2 — Coffee, hunting, bathing, and the cave

Day 2 moves between the family rooms, hunting grounds, bathroom puzzles, and the cave search for three pocket watches and the ancient book.

Gameplay source for this section: video part 2.

P02-01 — Record the room numbers

Step 1. Inspect the panels in the rooms and note the numbers shown: 3, 5, 1, 4, 2, 6.

P02-02 — Open the 315 lock

Step 2. Use the room layout—Alexandra above, William on the left, and Aldous on the right—to enter 315. Take the coffee beans.

P02-03 — Grind the coffee beans

Step 3. Put the beans into the grinder and process them into ground coffee.

P02-04 — Brew the coffee

Step 4. Add the ground coffee to the machine and brew it. Completing the coffee sequence opens the door.

P02-05 — Take William's hat

Step 5. Enter William's room and collect the hat.

P02-06 — Match the family keepsakes

Step 6. Rearrange the items in the box to match the family portrait: the mother with the ruby, the father with the pipe, and the children with the wine glass and crow. Take the goblet.

P02-07 — Collect the creature's liquid

Step 7. Hold the goblet beneath the creature and catch the liquid it spits out.

P02-08 — Plant the seed

Step 8. Take the seed from the goblet and place it in the flowerpot.

P02-09a — Feed the bird

Step 9. Give the bird its food and collect the feather it drops.

P02-09b — Tickle the bird's foot

Step 10. Use the feather on the bird's foot to reveal the foot mechanism.

P02-10 — Solve the foot-swing pattern

Step 11. Read the note and reproduce the required number of upward and downward foot movements.

P02-11 — Open the window

Step 12. Pick up the small key from the floor, attach the handle to the window, and open it.

P02-12 — Restore William's sight and wake him

Step 13. Apply the collected liquid to William's eyes, then pour the coffee to wake him.

P02-13 — Organize the cave clue

Step 14. Use the written relationships to connect the estate, cave, three pocket watches, and the ancient recipe book.

P02-14 — Complete the cleaning puzzle

Step 15. Take the cleaning brush, then order the designs by their dot counts and relative sizes to finish the cleaning mechanism.

P02-15 — Finish the hunt

Step 16. Load the ammunition, aim at each target that appears in the hunting area, and hit it.

P02-16 — Enter the body-part code

Step 17. Use the reactions linked to meat, bone, eye, nose, and the other body parts to enter 921276 and open the mechanism.

P02-17 — Steal the first pocket watch

Step 18. Distract William's line of sight, open his bag while he is not watching, and take the pocket watch.

P02-18 — Sort the bathroom symbols

Step 19. Group the bathroom tiles into the six categories shown by the clue: humans, body parts, animals, plants, furniture, and personal objects.

P02-19 — Solve the supported slider puzzle

Step 20. Move the patterned pieces only horizontally or vertically, keeping each move supported by an adjacent piece. Take the herb when the layout is complete.

P02-20 — Prepare the herbal bath

Step 21. Add the herb to the bathwater to begin the bathing sequence.

P02-21 — Open the 281 suitcase

Step 22. Follow the pattern formed by the crossed-out numbers and enter 281 to unlock the suitcase.

P02-22 — Guide the bubbles

Step 23. Click and guide the active bubble along the route so it absorbs the remaining bubbles.

P02-23 — Use the cockroach (Pest Control)

Step 24. Pick up the cockroach and place it at the matching hotspot to obtain another pocket watch. This interaction also unlocks the hidden Pest Control achievement for Inspecting the Cellar.

P02-24 — Open the left cave passage

Step 25. Take three items from the cave in one trip to open the passage on the left, then use the magnet to open the barred tool cabinet.

P02-25 — Pull out the cave key

Step 26. Lower the magnet into the opening and use it to retrieve the key.

P02-26 — Light the oil trail

Step 27. Use the bottle opener, collect the oil in the bottle, pour it along the route, and ignite the trail with a match.

P02-26b — Read the three clock clues

Step 28. Inspect the three clock faces revealed by the fire. One of the three times is 10:00; record all three for the watch puzzle.

P02-27 — Break through the cave obstacle

Step 29. Attach the hook, then use the hammer to break the obstruction and continue deeper into the cave.

P02-28 — Set the three pocket watches

Step 30. Hang all three pocket watches in place and set them to 8:00, 4:00, and 10:00.

P02-29 — Take the ancient book

Step 31. Once all three watches show the correct times, collect the ancient book that appears.

Day 3 — Elixir, banquet, and the main ending

Day 3 covers the alchemical recipe, dinner preparations, guest-specific serving puzzles, and the complete main-story ending.

Gameplay source for this section: video part 3.

P03-01 — Lure out the cat

Step 1. Use the extra stone in the room to draw the cat out, then continue following it to each new position.

P03-02 — Record the four frame symbols

Step 2. Inspect the four symbols in the frame and clue, and note the number and direction information needed for the next mechanisms.

P03-03 — Open the direction lock

Step 3. Enter Left, Left, Right, Right, Left, Right from the confirmed symbol relationships. Take the matches from the opened compartment.

P03-04 — Complete the recipe panel

Step 4. Translate the collected symbols into the matching positions on the recipe mechanism and finish the board puzzle.

P03-05 — Begin the elixir recipe

Step 5. Follow the first recipe instruction and place the egg into the bottle.

P03-06 — Extract the blood

Step 6. Place the meat into the device, operate it as shown by the clue, and collect the blood.

P03-07 — Extract the fruit juice

Step 7. Place the fruit into the device, operate it as shown, and collect the juice.

P03-08 — Brew the elixir of life

Step 8. Add the juice, acid, oil, and three drops of blood in that order to complete the elixir.

P03-09 — Repair the chair

Step 9. Replace the missing chair part and reattach the statue's head to restore the chair.

P03-10 — Get the cake

Step 10. Complete the kitchen mechanism and collect the cake.

P03-11 — Start dinner

Step 11. Light the stove and follow the recipe to prepare the onion, potato, shrimp, and fish while heating the soup.

P03-12 — Prepare the soup ingredients

Step 12. Cut the onion, shrimp, tomato, and mushroom separately and add them to the soup. Roast the potato on its own.

P03-13 — Serve the soup and potato

Step 13. Finish cooking the soup and baked potato, then begin serving the guests.

P03-14 — Open the banquet wine

Step 14. Arrange the wine-bottle mechanism so it reads 1643, then take the wine for the banquet.

P03-15 — Set out the wine

Step 15. Give the wine glass and the bottle of wine to the master to finish the banquet setup.

P03-16 — Rebuild the portrait layout

Step 16. Match the outer portrait frame to the correct positions of the people in the room. This opens the box beside the basement.

P03-17 — Collect the baby-preparation item

Step 17. Take the required item from the opened barrel or box and continue the sequence for getting the baby ready.

P03-18 — Prepare the child for dinner

Step 18. Find the hair ribbon, put it on the child, and bring the child to the dining room.

P03-19 — Distribute the appetizers

Step 19. Follow the guests' preferences: William does not take bread, Alexandra takes rabbit, and everyone receives wine.

P03-20 — Distribute the main course

Step 20. Use every dish. Aldous is vegetarian and has an allergy; William eats twice as much as his brother and needs variety; Alexandra prefers more meat than vegetables.

P03-21 — Distribute dessert

Step 21. Give the master only cheese. Never pair chocolate with cheese. William dislikes yellow food and must receive one more piece than his brother.

P03-22 — Give water to the injured guest

Step 22. Catch the dripping water in the available container, then hand the water to the injured person.

P03-23 — Open the blocked route

Step 23. Start a fire with the flint and place the wooden boards to create a way through.

P03-24 — Enter the 358 code

Step 24. Combine the number clues seen earlier into 358 and use it to open the mechanism.

P03-25 — Drink the elixir

Step 25. The story reveals that Alexander took the elixir of life. Accept the potion from the maid and drink it.

P03-26 — Complete the main ending

Step 26. Close the carriage curtains, board the carriage, and leave the estate to finish the main story route.

Day 1 hidden achievements

These optional interactions are easiest to collect while replaying Day 1. Trigger them before advancing past the relevant scene.

Gameplay source for this section: video part 4.

P04-01 — Horse-screen secret

Step 1. On the horse screen, repeatedly click the foal's ears and eyes until the hidden interaction triggers.

P04-02 — Feed milk to the cat

Step 2. While preparing breakfast, give milk to the cat for the hidden interaction.

P04-03 — Overwork Aldous

Step 3. Repeat Aldous's exercise sequence until his face turns red.

P04-04 — Dust the servant-room frame

Step 4. After obtaining the feather duster, use it on the picture frame in the servant's room.

P04-05 — Let the sheep taste the bouquet

Step 5. Give the bouquet to the sheep first, then take it to Alexandra.

P04-06 — Make the altered tea

Step 6. Feed the tea leaves to the cat, collect the green item from the corridor crate, add it to the tea, and serve the drink to Alexandra.

P04-07 — Give the baby the banquet wine

Step 7. When the party begins and you obtain the wine, give it to the baby before serving anyone else.

P04-08 — Find the garden silhouette

Step 8. At the start of night patrol, check the garden entrance and interact with the figure there.

P04-09 — Chase the attic crow

Step 9. While searching the attic, watch for the crow at the window and drive it away.

Day 2 hidden achievements

Day 2 has eight hidden achievements tied to coffee, grooming, cleaning, hunting, laundry, bathing, the night shift, and the cellar. Pest Control is integrated into the main route at P02-23 above; the remaining seven are listed here.

Gameplay source for this section: video part 5.

P05-01 — Roast Aldous's coffee beans

Step 1. Take the coffee beans, roast them on the stove, brew them into coffee, and give the drink to Aldous.

P05-02 — Groom William with the feather

Step 2. Use the feather to brush William's beard and chest.

P05-03 — Clean the red floor stain

Step 3. After obtaining the cleaning brush, return to the servant's room on the first floor and scrub the red stain from the floor.

P05-04 — Never miss during the hunt

Step 4. Hit every hunting target with a single shot when it appears.

P05-05 — Inspect the bathroom keyhole

Step 5. During the laundry sequence, stop and look through the bathroom keyhole.

P05-06 — Wipe the fogged window

Step 6. After Alexandra gets into the bath, wipe the condensation from the window.

P05-07 — Garbage Disposal: knock down the hanging remains

Step 7. During the night duty, go to the second-floor balcony and knock down the hanging body parts to unlock Garbage Disposal.

Day 3 hidden achievements

Day 3's seven hidden interactions include alternate uses for the elixir, soup, portrait, banquet lamp, and Aldous's injury.

Gameplay source for this section: video part 6.

P06-01 — Pet the cat on the result screen

Step 1. After finding the cat several times, repeatedly touch it on the woman's transformation or result screen.

P06-02 — Test the elixir on the parrot

Step 2. After brewing the elixir of life, give it to the parrot before using it in the main story.

P06-03 — Find the table-leg note

Step 3. In the servant's room, click the left leg of the table and take the hidden note.

P06-04 — Add the fly to the soup

Step 4. Kill the fly with the knife and add it to the soup. After the soup causes the hallucination, inspect the toes shown in the scene.

P06-05 — Give William the fish brooch

Step 5. At the second-floor frame, align the fish image with William's portrait. Inspect the portrait, take the fish brooch, and pin it on William.

P06-06 — Pull the hanging-lamp cord

Step 6. During the banquet, repeatedly click the cord attached to the hanging lamp.

P06-07 — Remove Aldous's bullet

Step 7. Take the fork from Aldous's shoulder, use it to pull the bullet from his leg, and clean the wound with the cloth.

Kate's brother secret quest

This post-ending route sends you back through earlier days to solve a clock clue, maze, symbol chain, and telescope puzzle.

Gameplay source for this section: video part 7.

P07-01 — Set the Day 1 clock to 4:05

Step 1. Follow the note back to Day 1 and set Aldous's alarm clock to 4:05.

P07-02 — Rebuild the person-and-place record

Step 2. Use the object order on the note to connect the correct people and locations, then open the matching record.

P07-03 — Solve the maze and floor box

Step 3. Leave the center of the maze by going Right, Right, Right, Left, Right, Left. Enter the same sequence on the floor box.

P07-04 — Record the nine attic symbols

Step 4. Read the new note, circle and record all nine symbols, and carry the pattern to the attic mechanism.

P07-05 — Connect the attic associations

Step 5. Use the note to connect the house, castle, window, moon, and water-wave symbols. The correct links open the mechanism.

P07-06 — Solve the basement eight-tile grid

Step 6. Apply the symbol relationships you recorded to the eight basement tiles, matching the overlapping and non-overlapping shapes to open the next compartment.

P07-07 — Find the four-symbol number clue

Step 7. Click the clothes to obtain the four-symbol note, then trace each symbol back to its corresponding number.

P07-08 — Open the 6294 chest

Step 8. Convert the four symbols into 6294, enter the code on the chest, and take the telescope.

P07-09 — Find Kate's brother

Step 9. Use the telescope to inspect the castle across the lake. Locate Kate's brother to complete the secret search quest.

Verification and sources

The supplied evidence archive contains 119 indexed gameplay frames, seven timestamped transcripts, and a machine-readable evidence table. Of the 119 entries, 95 were checked against narration plus a gameplay frame, 10 against narration, on-screen text, and a frame, 13 against on-screen text plus a frame, and one against on-screen text, a frame, and adjacent narration.

• Main route — Day 1
• Main route — Day 2
• Main route — Day 3
• Day 1 hidden achievements
• Day 2 hidden achievements
• Day 3 hidden achievements
• Kate's brother secret quest

This walkthrough is an independent English adaptation of the supplied research material and is not an official Rusty Lake publication.