INSIDE main walkthrough: scenes from the forest to the research facility

Open the forest solution

Begins just after the boy descends into the forest and ends in the field beyond the lake.

1. Where a truck and people appear, wait behind large foreground cover. Move right after the people leave
2. Tip the refrigerator and push it beneath the high ledge as a step. Move the next box beneath its ledge too
3. When dogs chase near the water, swim right and climb the roots on the far bank
4. As the vehicle approaches, drop from the cliff and immediately enter cover behind the left rock. Continue right after it passes
5. During the human chase, jump the fallen tree. Wait behind vehicle wreckage for another vehicle to pass, then run again
6. Jump from the cliff with dogs behind you into the lake. Breathe before the right-hand surveillance light, then dive beneath its beam
7. Climb the right bank and follow the road to the field

Wide tables scroll horizontally.

No matching entries in this table. Shorten the query or clear it to restore all entries.

A chase beginning does not necessarily mean failure. Do not keep hiding in sections designed for escape.

Open the barn-to-farm-exit solution

1. With the chicks at the barn, climb the outside rope and swing into the upper entrance
2. Drop down, open the left door and let the chicks inside. Pull the machine's starting cord repeatedly until it runs
3. Move to the far right to gather the chicks, then return to the lever. Hold it as the chicks cross the intake
4. Use the fallen hay as a step. Drop from the roof onto the cart, then push it against the right wall and climb
5. Jump the charging pig as it approaches so it hits the wall. Inside the building, lure it into the far wall too
6. Grab and pull out the object at the rear of the stopped pig. Move the pig below the overhead device and use it as a step to connect
7. Move the background people onto the lower level. Keep the group at the gate holding grab while bringing the others over to lift it
8. Use the assembled people to grip the right platform and pull it left. Disconnect, follow the opened route and lift the outside door

Letting chicks inside, starting the machine and guiding them to the intake are separate prerequisites. If the machine runs without dropping hay, inspect the chicks' positions.

Open construction-site and rooftop solutions

1. Push the chain cart against the wall, climb the lowered chain and open the window into the building
2. Move the suspended timber sideways and raise it with the lever. From the ladder top, cross the timber to the safe
3. As the safe begins falling, leave the breaking floor immediately. Return below and enter the hole it created
4. Open the inner gate and use the overhead device to move both background people to its right. Disconnect, close the gate and reconnect
5. Move them until they reach the wall and gate, then send them the opposite way so they stand on both floor switches together
6. Follow the opened route past the tracks and long ladder. Slide down the sign-covered roof and jump onto the right vertical pipe to climb
7. Cross roofs, fences and collapsing platforms. Grab and remove boards over the entrance, then tip the next ladder sideways to reach the upper level
8. Before activating power, lift the elevator grate at the far right. Return and power on, then cross between pillar shadows whenever the light moves away to enter the elevator

Use the wall and closed gate to align the two people, rather than trying to stop just one directly. You do not need to stand where the safe will land.

Open the monitored procession and double control-device solution

1. After the floor breaks and you fall into the line, stop first. Walk when the people ahead and behind walk, and stop when they stop
2. Jump together within the first marked area, then turn together in the next marked area
3. When the dog reacts, run right and jump through the window. Draw it close before climbing the ledge, then jump to the overhead device
4. Use the controlled person to push the cart right. Lower the boy onto the platform, place the red box on the floor switch and reconnect
5. Connect the first person from the cart to the next overhead device to control a second person. Use the second person to bring the cart back and align a landing surface below the boy
6. Leave the second person on the floor switch while disconnecting and reconnecting the boy. Use the first person to push the cart through the opened gate
7. Align the boy left of center over the large floor door. Have the person hold the lever until the door is fully open, then disconnect the boy and fall through

Wide tables scroll horizontally.

No matching entries in this table. Shorten the query or clear it to restore all entries.

Follow nearby people's movements rather than memorizing steps or seconds. After restarting, do not input ahead of the others.

Open water-level device and rooftop solutions

1. After falling into water, pull the lower-left pallet handle. Move the floating pallet right as a step
2. Use the button beyond the vent to open a path. Fill the next tank, press its underwater button and swim upper-right while the water falls
3. Tip the tall floating object in the next room and move it under the tank's chain. Raise the water to float the platform and climb the chain to the roof
4. On the roof, stay in shadows cast by overhead pipes, adjusting your position as the light moves
5. Turn the handle only while the light is away to lower the cage. You may do it gradually, returning to shadow between attempts
6. Cross the cage, avoid the next light and open the floor hatch. Descend underground using beams and chains

The cage does not reset when you release the handle. Divide the work instead of turning continuously outside cover.

Open underground dogs and the submarine entrance solution

1. When dogs approach on the far bank, return to the water and lure them in too
2. Dive beneath them, emerge on the other side and run right
3. Climb the fence to evade them. Descend on the right, remove one board from the blocked wall and return to the fence before the dogs circle around
4. Lure them to the opposite side again and repeat board removal. Pass through once the hole is large enough
5. Descend the next ladder and wait in shadow before the window until the worker enters the building
6. Drop onto the submarine and board. Dash through the bottom red door, wooden floor and cracked wall in sequence

Climbing the fence does not make the dogs disappear. Create enough time to remove one board at a time.

Open submarine underwater-section solutions

1. If breaking a crack leaves reinforcing bars, surface and leave the craft, then swim the boy alone through the gap
2. From the far-right platform, climb the shelves and rope. Press the red button, then immediately escape into water to avoid the rolling cylinder
3. Climb the rope again to the opened path. Activate the mechanism above the launching box, then use the left rope from the upper beam to cross to another platform
4. Use the upper button to open the craft's door and return to it. Dash out of the surface over the ledge, then break the lower door
5. In the water-level-button room, leave the craft on the exit side. Get out to operate the button, return aboard and jump from the lowered surface to the exit
6. Point the craft's light at the underwater pursuer to keep it away. Pass the door while leaving it on the other side, then dash into the red part above the door to trap it
7. Break the ceiling boards to surface. Leave the craft at the right bank and push the large door into the next section

Wide tables scroll horizontally.

No matching entries in this table. Shorten the query or clear it to restore all entries.

Dash uses a held and released jump input. Some sources describe grab instead, but this guide follows PC reports and another author's explanation in using jump.

Open the numbered door and gathering-people solution

Begins after leaving the submarine. Reduce the middle-floor display to zero to exit. Its number is not a room number to visit.

1. Activate power on the middle floor's right to enable the elevator. First go down and head right
2. Pass two underwater pillars, breathing at the intermediate surface. Move from the rock to a rope, the next rope and the upper platform
3. Jump to the overhead device; its cable breaks, but the people below catch you. Travel with this group thereafter
4. Have them lift you to the ladder, then lower the hand-operated lift and bring everyone aboard
5. Move the large left cart beneath the ceiling hole. Have the group throw you to the rope, drop through the hole onto the cart and let them carry you left
6. Move a box near the hanging cage and activate the launching device. While raised, place the box underneath to make a two-tier platform, reactivate and jump to the cage handle
7. Return with the new people and take the elevator to the top floor. Drop the left cage, then have the group throw you to the distant right room and drop the motionless body below
8. Lift the middle floor's left grate together. Use the next lever to tilt the cart ramp; after the cart gains momentum, reverse the slope so it falls on the other side and frees people
9. Bring everyone to the middle floor's right pressure plate. Drag the dropped body onto it too and pass the door once the display reads 00

Wide tables scroll horizontally.

No matching entries in this table. Shorten the query or clear it to restore all entries.

Wait until the group reaches the boy before boarding the next elevator. Before being thrown, gather them beneath your feet again.

Open the shockwave bridge solution

1. Push the first crate into a wave to break it and clear the path. Immediately after a wave passes, run into the first metal panel's shadow
2. Pull the next lever to raise your shielding panel and wait out a wave. Afterward, reset the lever to raise the next panel and run there
3. Position the rotating panel to cover the ladder midpoint and next landing during a wave. Stop once while it covers the midpoint, then restart immediately after the wave and move
4. After climbing, follow the moving panel so you remain protected during the jump to the next platform
5. Activate the launching box after a wave, then return to left cover. After the next wave, board the box and use its rise to jump into the right passage
6. After operating the indoor lever, grab the red shielding panel and move with it. Wait one wave before the narrow bridge where floor and rail break, then cross immediately afterward
7. When the large rotating arm descends, shelter in its shadow. At the final slope, align with the warning and wave, sliding while protected by the slope wall
8. Reach the safer lower area and take the elevator. After flooding, lift the right grate and swim through the bright upper-right opening

Wait for the actual wave to pass rather than moving on its warning sound alone. If a second wave catches you at the rotating panel, adjust its starting position rather than running speed. No fixed seconds are prescribed.

Open flooded-base mechanism and chase solutions

1. Jump from the launching box to the left rope and use the upper lever to open the right door fully. Swing back to it before it closes
2. In the room with two launching boxes, activate right then left. Reach the high button with the right box; extend the support while the left rises to leave it elevated
3. Move from the right box onto the raised left box and activate it to reach the upper floor
4. When the underwater pursuer appears, grip the right rope. Swing to the next rope, then quickly pass through the right underwater passage
5. At the moving chain, touch the water with your feet from its bottom to lure the pursuer left, then climb before capture. Back on the right, dive and press the underwater button, passing alone as the door closes
6. Beyond the round door, climb the right platform and open the floor hatch. Dive to open the right door with the button, then return above
7. Touch the water at the far right to lure the pursuer there, return over land to the hatch, dive again and press the button while passing the closing door
8. Climb the chain in the next waterway. The long event there is different from an ordinary failure; wait for progression

Opening a tank door in preparation and crossing while closing it are separate phases. Do not repeatedly dive into the same entrance with the pursuer directly below.

Open the solution after your underwater condition changes

After the chain event, you can remain underwater for longer. Do not apply the early breathing limit from this point onward.

1. Once control returns, swim up and through the flooded right-hand passage
2. Past the door with periodic currents, grip the ceiling's red handle
3. Hold while the current is strong, then move to the next handle when it weakens
4. Holding the next handle lets the current open the exit. Swim upward when the current weakens again

Do not introduce this change as an ability available in early dives. It is neither an oxygen upgrade from another game nor a collectible reward.

Open the facility approach and ceiling-water solutions

1. Wait in the platform's shadow in the searchlight room. When the light moves away, turn the central handle to move the platform right, then use the right ladder and platform to progress
2. Drop through the opening into the small lower tank to enter the facility. Knock the underground launching box off its base using the side panel while raised
3. Activate the box on the left slope to send it upward. Place it directly below the ceiling opening, then close the floor with the button at its highest point to leave it above
4. Return the boy through the left waterway and round door to the upper room. Activate the floor box first, quickly push the movable box onto it, board and activate that one too. Use the lower-then-upper launch sequence to reach the ceiling water
5. Release both side fasteners on the large underwater door and continue upward. In the next box-moving room, wait for the workers to pass the rear door
6. Lower the water to float the box and move it over the platform beside the ladder. Raise the water to leave it on that platform
7. Keep the exit open while lowering the water to a height reachable from the box. Use ladder, box and water to reach the right exit

Wide tables scroll horizontally.

No matching entries in this table. Shorten the query or clear it to restore all entries.

The collection-only upper passage is omitted here. Distinguish the platform position for ordinary progression from its collection position.

Open facility groups and elevator solutions

1. Wait in the ceiling water until the workers below leave. Drop to the floor and raise the left lever to release the submerged people
2. Have them throw you up, then lower the raised lever to restore the water level
3. Atop the right stairs, have them lift you into the water. Wait until the people below gather where they can catch you
4. Operate the red button while falling from the water and take the opened right door
5. Use the group to cross the large gap. After they fall in, drop to be caught and thrown into the narrow upper-right passage
6. Climb into the elevator and take it upward. Move slightly left so people from the ceiling descend and join
7. If not collecting, gather everyone in the elevator, return below and lift the heavy right door together

Collectible 13 requires splitting the group here, but ordinary progression can keep everyone together. See the collectibles article for recovery.

Open the route into the research facility

1. Follow the corridor lever and stairs, then bring the cart before the large window back beneath the earlier ladder
2. Climb from cart to ladder, controls and suspended light. Swing partway up the rope to the right pipe and enter the vent
3. Open the floor hatch and follow the narrow passage. At its final ladder, descend for the main game; the upper detour holds the collectibles guide's last device
4. Enter the lower control room and move the machine platform to the right ladder. Ride it to the ladder and descend into the large lower tank
5. Release the central underwater structure's left and right fasteners. Activate water flow using the lever above the surface, then dive to the lower central handle before the current strengthens
6. Hold the handle until the upper opening is wide enough, then release and ride the current into the upper tank
7. Disconnect the devices attached to the central subject in sequence to trigger the next event

Sources disagree between three and four attached devices, so no fixed repetition count is given. Watch the remaining connections and screen response.

Open the normal ending solution

These are final solutions, including a change of controlled subject. Ordinary story progression does not require completing collectibles.

1. Once controlling the mass, pull the device on the left glass to make an exit. Pull doors free and use the earlier group's strength to reach the opening above
2. After falling, pull the heavy wall object free and use it as a step to the high opening. Break through the next room, then collect the long underwater timber
3. Raise the timber vertically to press the overhead red button. Drop it onto the next lift's floor switch and immediately board to rise
4. When workers open a passage, wait slightly back, then drop through the floor opening
5. Throw the box at the ceiling cover to remove it, then throw again to break the light inside. Put the box in the furnace to ignite it
6. At the return sprinklers, throw the burning box overhead, move ahead and catch it. Keep it burning and throw it into the blue chute
7. In the next room, move the cart under the suspended machine. Grip and swing from it, using the workers' attachment to the wall to create an opening
8. Throw the launching box to the worker above. When it returns activated, throw it at the overhead button and cross the door while pressed
9. After falling into the dark tank, swim down and remove the lower-right wall panel. Pull out the inner grate too and escape
10. Surface and head right. For the final wall, back up slightly for a run-up and charge through

Wide tables scroll horizontally.

No matching entries in this table. Shorten the query or clear it to restore all entries.

Prima and sokkus agree on a right-side exit from the final tank, differing from Gamepressure's left-side wording. This guide follows the two agreeing sources. Interpretations of the ending are separate from progression requirements.

The numbered door is nearly open but still blocked

Gather the group on the middle-floor pressure plate and bring the motionless body dropped from the top-right room too. Check the closed mine solution for any missed floor or cage.

I mistake a later event for failure and restart

Some scenes, such as after the flooded-base chain, contain a long sequence unlike checkpoint recovery. Wait for control to return and inspect your condition before deciding.

Does ordinary completion require every collectible?

No. The normal story ends by following the main route. Collectibles and subsequent requirements are covered separately.