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A shot of James from the chest down, looking at the Chained Box in Otherworld Brookhaven Hospital
Screenshot by Dot Esports

Silent Hill 2 remake Chained Box guide – All combinations and Lapis Eye Key location

Uncover the contents of the Chained Box with our helping hand to find the key and combinations in the Otherworld Brookhaven Hospital.

Part of the Otherworld Brookhaven Hospital in Silent Hill 2 remake, the Chained Box is the core puzzle you need to solve if you want to discharge yourself. After completing Brookhaven Hospital only to get tricked by Laura, James finds himself on the wrong side of a nightmare. The Bubble Head Nurses now have knives, the Lying Figures explode on impact, and Mannequins hide around corners like ninjas.

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So, you must solve the Chained Box puzzle in Silent Hill 2 remake if you want to make it out of the Otherworld alive. Here’s everything you need to know about the Chained Box.

This guide has Standard puzzle difficulty solutions and combinations.

Silent Hill 2 remake Chained Box walkthrough

A wide shot of James opening the Chained Box in the Otherworld Brookhaven Hospital
It better not be Mary’s head. Screenshot by Dot Esports

The Chained Box puzzle has three parts to it. There are two combinations to uncover and a key to find. You must visit every floor to solve this puzzle, giving you the -1 Elevator Button to reunite with Maria and jump over the final hurdle to conclude the Brookhaven Hospital. For now, you’ll want to focus on locating the Lapis Eye Key to remove the first chain from the Chained Box.

Lapis Eye Key location

Otherworld Brookhaven Hospital 3F map with player icon in Exam Room 4
Head straight to the third floor to avoid the wrath of Nurses. Screenshot by Dot Esports

Although this is a new area for James and us, you can still use the map to guide you. Landing inside the room above the Dayroom in the Otherworld, James should make his way to the second floor via the elevator. As you can’t reach the third floor inside the elevator, you instead need to use the western staircase to reach this section of the Otherworld. This will lead you straight to Exam Room 4. There is an Instrument of Force you should use immediately on the dummy. A hole in its head is revealed after destroying its arm, indicating you need to put something inside (for what we assume is a fake lobotomy).

Otherworld Brookhaven Hospital 1F map with player icon on Key of Bliss location
Break down and squeeze through walls to avoid enemies. Screenshot by Dot Esports

Staying on the third floor, find the ladder directly west of the dummy’s location, which will take you down to the first floor. This area is a pain to navigate as multiple enemies stack within narrow corridors. We recommend you use the Handgun to thin out the enemies as the Nurses, Mannequins, and Lying Figures spawn in this version of Brookhaven Hospital. To perform your lobotomy, locate the Key of Bliss within a hole inside the large room above Storage and Restroom. You can access this area by heading on through Medical Records.

Once you have the Key of Bliss, return to Exam Room 4 and use it to get the Lapis Eye Key.

Calendar Page combination

The Calendar Page combination hint
Each lines corresponds to the Chain Box combination. Screenshot by Dot Esports

The second part of this puzzle takes place on the west side of 2F. You no longer need to visit another floor for the remainder of this puzzle. Instead, follow the chain to the left of the Chained Box, which will take you to the room called M2. This cell has its own puzzle where the rules are detailed in the Calendar Page note on the floor. Each line to this note corresponds to a number needed for the Chained Box’s four-digit code.

Looking into the M1 sink for the Calendar Page combination
Count the pills. Screenshot by Dot Esports

The first line strictly tells you the first number of the four-digit code. The next lines mention the pills in the sink. Look into M2’s sink, count the pills, and make a note of the second digit for the code.

Looking out a small gap in the M1 wall at a light with the sentence "watch it go dark" on the wall underneath the hole
Turn your flashlight off and count the flickers. Screenshot by Dot Esports

The third line refers to the time of the horn. This links directly to the fourth and final line, which refers to the number of times the light flickers off outside the room. There are two holes in M2. The hole near the ceiling is angled at a light that frequently flickers in a set pattern. Count the number of flickers, as this is the next digit you need.

A close up of the dial placed on number two in M2 of the Otherworld Brookhaven Hospital
Fix the hand and sound the horn based on the number of light flickers. Screenshot by Dot Esports

This number is also used on the horn. You can confirm this if you go into M1 and interact with the dial. Fix the hand and move it across to the number of light flickers. This will be two if you’re playing on Normal puzzle difficulty.

Inputting 1622 into the lock dial for the Chained Box puzzle
While the Lobby is safe from monsters, you should input codes as you explore. Screenshot by Dot Esports

This will confirm that the Chained Box Calendar Page code is 1 6 2 2.

Treatment Stretcher combination

Otherworld Brookhaven Hospital 2F map with player icon in the restricted Observation Room for the Director's Office Key spawn
Climb into this area to nab the Director’s Office Key from under the patrolling Nurse’s nose. Screenshot by Dot Esports

With only one chain left to break, you can head to the east side of 2F and enter L2. Move the wheelie unit from this room and in front of L3‘s wall. Jump up to access this locked area and move into the Observation Room, handling any Nurses attempting to kill you. Pick up the Director’s Office Key in front of the television in the Observation Room and head south to unlock the office. Ascend the ladder to find the Treatment Stretcher.

James looking at the powered Stretcher for the final Chained Box code
Restore power to the Stretcher to learn the final code. Screenshot by Dot Esports

Thankfully, the final part of the puzzle is far simpler than the previous one, as you only need to activate the Generator above the Restroom on 3F to switch on the Treatment Stretcher. The code will burn into the Stretcher when you hit the power button. All you need to do now is return to the Chained Box to input the second code, 9 6 5 9, to reveal the box’s contents.


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Author
Image of Hadley Vincent
Hadley Vincent
Freelance Writer
Writer for Dot since Oct. 2023. Just a Psychology graduate trying to find the meaning of life through gaming. An enthusiast of indie horror and anime, where you'll often find them obsessing over a great narrative and even better twists that'd make M. Night jealous. Their shocking twist? They think The Last of Us II is a masterpiece.