Goodnight Universe Puzzle Walkthrough and Achievement Route

Plan two short replays while following this Goodnight Universe puzzle route: Helping Out for the two opposite Orson achievements, and The Decision for Leave, Murph! before returning to save Isaac. The main run clears both chore lists, all three Train Set passes, the Big Boss Baby stealth route, the Part 3 rescue, and the remaining achievements. Instructions use the Steam mouse prompt M1; controller and camera-as-controller players should use the equivalent action shown by their current on-screen binding.

The route was rechecked on August 9, 2026 against the latest item in the official Steam update history: 1.0.6, dated December 12, 2025. That update made some key interactions easier to locate and fixed several chapter problems. If a prompt or scene still fails to advance on an older build, update before trying to force an object that the game is not currently accepting.

Part 1: clear both chore lists#

Bedtime Routine

After Simon leaves, use the checklist as a state display. Close the curtain on the right. Switch off the lamp behind the chair, the lamp near the wardrobe, and the wall switch by the door. Turn on the blue noise machine on the dresser.

Open the cupboard, focus on the books until they rise, then swipe the floating stack into the cupboard and close its doors. Move every floor toy toward the box in the middle of the room. When all five checklist lines have cleared, rotate the baby monitor toward Isaac and interact with it.

If the checklist remains: do not repeat the same toy pile. Recheck the three separate light sources, both cupboard doors, and the monitor orientation. The task ends from cleared object states, not from waiting.

Helping Out

This kitchen list is also the best place to organize four achievements. Finish each visible job:

• Dishes: swipe both dirty stacks into the sink, hold on the sink to clean them, then move the clean stacks onto the shelves on both sides.
• Dog: tip the food from the left counter into the bowl and open the dog flap at the back door.
• Toys: send the pieces near Cleo and her guitar into the toy box.
• Cabinets and drawers: close every open front; one small open drawer can keep this line active.
• Laundry: empty the basket on the dining table, lift the clothes, then use the swipe prompt to fold them.

Completing the whole list awards Remains of the Playmobil. The dog creates a deliberate fork. Push Orson toward the bowl for PETA Notified, or do not touch him and wait for him to reach the food for You Can’t Pet The Dog. Those actions cannot both happen in the same attempt. Take one now and replay Helping Out through Chapter Select for the other.

The face prompt in this chapter is also a convenient cleanup point for Bottle Half Full and Cry Baby Cry. Move upward for a laugh or downward for a cry. Each achievement needs five matching reactions across available face prompts; if you favored one emotion during the story, replaying this short chapter is safer than trying to predict a later prompt.

Part 1: Scaring Milo and the Train Set#

Scaring Milo

This sequence advances only after Milo moves to the room connected to the next scare. Turn on the radio on the left. When he investigates the kitchen, open its window. After he returns, run the sink; on his next kitchen visit, disturb the overhead lights. Trigger the kettle after he goes back again. When he enters the kitchen, throw the laundry basket. He retreats into the closet, which you can then shut.

If an object does nothing: Milo has probably not finished the previous movement or voice line. Wait until he occupies the relevant room, then use the next object once. Randomly activating everything does not close the sequence faster.

The Train Set: three passes

Pass one is a switch route. Start the train, use the control near the red house, then the control beyond the mountain. Lower the left half of the drawbridge before the train arrives, follow it across, and lower the right half. At the windmill, interact only when its blades have cleared the rail.

Pass two adds movable obstacles. Remove the monkey first. Slide the hanging bridge left to receive the train and right to carry it across. Lower the drawbridge while clearing the book and pins, then move the orange dog-shaped obstruction before the final turn. The heavy weight at the end is not your next solution; allow the collision so Cleo can build the third version.

Pass three tests timing while your view is blocked. Hold the globe up as the train approaches, then do the same with the box at the bridge. Lift the old computers at the final section. When Cleo becomes trapped, focus on her and hold until she is raised. That rescue ends the set piece.

Time Valuer uses the game’s skip feature. Repeatedly fail a supported challenge until the skip offer appears, then accept it. References report the prompt after several failures, often in the three-to-five range, but the safe instruction is to follow the on-screen offer rather than expect one fixed count. If you want to see every Train Set pass, earn this later in a replay or during another skippable action sequence.

Part 2: take both Gilbert achievements before the test#

In the facility hallway, pop every balloon, including the letters that form the welcome sign. Missing a letter prevents Baby Gamer, even if all round balloons are gone.

At the Gilbert Car test, do not lift the car immediately. Let Gilbert hit the first barrier three times to unlock The Babe Who Stares At Goat. Then complete the three requested lifts. Start holding as Gilbert approaches and release when the completion click sounds. The second barrier needs a longer hold; on the third, continuing to hold after the cue causes the rain-storm failure.

The Tantrum and the new symbols

Throw the bottle away three times. Use the bottle machine protruding from the left wall to break that wall, then push the shelves on the right until their contents gather at the fridge-like unit. Activate the unit to start the fire. Pull down the TV wall next.

Lower the only illuminated fixture and strike it twice until the pane shielding the van shatters. Start the van, then destroy the remaining wall. Later in Stuck, move the fridge-like machines away from the whiteboard. Slide the board, flip it, and focus on each of the three symbols until all three react. If the story does not advance, one symbol has not completed its focus response.

The Secret Mission: Big Boss Baby route#

Big Boss Baby requires a clean trip to Elliot’s office. Purple units project lasers and can be disabled with M1. The other moving droids react to impact noise: move them aside, but do not let them strike a wall or prop. A detection means the achievement attempt is over, even if the story lets you continue.

1. Disable the purple unit on the right when you are close enough that it will not restart before you pass.
2. After the next turn, disable the right unit, then the left unit around the following corner.
3. Past the Tax Evasion office, look up and disable the ceiling unit. Use the red box at the lower right to open the glass door.
4. Wait for the first sound droid to clear the wall, then make one controlled swipe left.
5. At the pair, wait until each unit lines up with a wall alcove. Move them into those open pockets without a corrective collision.
6. Open the left glass room with its red box and move the droid inside. Disable the purple laser immediately after it.
7. At the last moving droid, open a glass side room and place it inside. The second room on the right also works if the first alignment has already passed.

Reaching the elevator without an alarm is the success signal. If anything spotted Cleo or struck a wall, reload The Secret Mission from Chapter Select instead of hoping the office checkpoint will erase the alert.

Journal and Part 2 exit checks

Open the elevator panel on the left and fill its power meter. In Elliot’s office, switch on the standing lamp with the red indicator. Raise the journal between the two robot arms, stop it there, and slide the magnifying lens over the pages.

During the return trip, prioritize disabling each nearby droid before looking down at Gilbert to calm Isaac. A late calm input cannot undo an active laser. In the testing room, activate all three suspended lights. Near the end of Part 2, break the room objects, open both crib supports, and use the timed movement zones to crawl toward the damaged television; Wendy’s intervention is the transition into Part 3.

Part 3: choose the achievement ending in the right order#

Separate, start the ship, then decide

Take Isaac’s hand and remain still until the shadow appears. Drag it away from the white center, then select each of the three circles that separates from the symbol. When the symbol reforms, hold the close-eyes input to finish the separation.

Use the timed walking zones to approach Isaac, take Gilbert, and return to the chair. Activate the joystick. In the cockpit, ignore the decorative buttons and find the cylindrical object behind Gilbert; rotate it twice. On the route screen, begin at the planet on the left and connect the path to the planet on the right.

The Save Isaac? prompt now controls route order:

• For a continuous first ending: hold inside the Save Isaac circle. This opens the rescue sequence.
• For Leave, Murph!: make no input until the timer expires. The achievement appears, but this branch goes straight to credits. Use Chapter Select to replay The Decision, then actively save Isaac.

Saving You

Complete the opening timed walk, break the glass doors, and swipe the sealed door around the corner. Remove the security units and the next glass barrier. After another sealed door, clear the larger floor robots. At the elevator, open it and drop to the lower route.

Pull down the object on the left to bridge the first gap. Open the next sealed door and move the van. At the higher ledge, hold the close-eyes input until the flight sound finishes, then pull both red pipes down to form a path. Open the next door, repeat the held flight for the second ledge, and stop each fan blade separately inside the tunnel.

If you fail one supported action repeatedly, the skip feature can appear here as well. Accepting it is another route to Time Valuer; it is not required for the story.

Showdown and the full ending

Lift the large bot threatening the family and throw it aside. Walk to Isaac, lift him, and move him to his mother. Dialogue around Elliot does not change the route. When Wendy asks what you want, choose to send a message to my people. That opens Message Home and awards ET Phone Home.

Continue through the cave and family-return interactions. In My Gift, walk to the desk, open the laptop, and close the bedroom door when you are ready. Face the laptop and stop moving the camera. When the icon appears, hold the power input. Releasing it moves to the credits and completes the full-ending achievement.

Achievement cleanup by chapter#

Achievement	Chapter	Required check
Remains of the Playmobil	Helping Out	Clear all five kitchen chores.
PETA Notified	Helping Out	Use the push power on Orson after opening the dog flap.
You Can’t Pet The Dog	Helping Out	Do not push Orson; wait for him to walk to the bowl.
Bottle Half Full	Several chapters	Choose the laugh reaction five times.
Cry Baby Cry	Several chapters	Choose the cry reaction five times.
Baby Gamer	Gilbert the Car	Pop the hallway balloons and every balloon in the welcome sign.
The Babe Who Stares At Goat	Gilbert the Car	Allow three barrier impacts before lifting Gilbert.
Big Boss Baby	The Secret Mission	Reach Elliot’s office with no detection.
Time Valuer	A skippable challenge	Repeat a supported failure until Skip is offered, then accept it.
Leave, Murph!	The Decision	Let the Save Isaac timer expire.
ET Phone Home	Showdown	Ask Wendy to send a message to your people.
Goodnight Universe	My Gift	Finish all three parts and reach the full credits.

If only one achievement remains, use its named chapter rather than replaying the campaign. The two Orson results need opposite attempts, while the ending choice needs one short alternate branch followed by a rescue replay. Everything else can be layered onto the main route or cleaned up directly from its chapter.

Official reference: Goodnight Universe on Steam.