The core gameplay of the game is to find useful items in the map to solve puzzles, open the door and escape, while avoiding the butcher's pursuit.

Things to do :
1. Explore the map.
2. When you find a highlighted item on the map, be sure to touch it. The location of the item will be automatically marked on the map (note that boxes cannot be marked).
3. When exploring the map, remember to throw some unused items in the corridor for easy access later.

Clearance Strategy (Open two doors - Clearance Conditions)
1. The first door: Find an electrified distribution box and install it in the security room, then pull down the power switch.
2. The second door: The source of evil that requires burning down the wooden house on the second floor with gasoline, salt and a lighter.

The location of items on the mental hospital map reveals the plot and usage :
1. Crowbar: Among the 6 treasure chests, only one contains an item - a crowbar. The other 5 are all empty. Pry open the wooden chips of the second-floor wooden house, which is the room where the source of evil was last burned.
2. Lock opener (fixed position) : It is used to open the blue treasure chest and is located in the room next to the wooden house on the second floor.
3.Pliers (possible location) : Used to cut the chains in the kitchen on the first floor, possibly located in a large area below the basement map
4. Gas valve (possible location) : Shut off the steam in the basement. It may be brushed in the adjacent room above the projection room on the first floor.
5.Key (possible location) : Open the doors on both sides of the second floor. The key is universal and may be located in projection Room 6 on the first floor.
6.Remote control (possible location) : Used for solving secret rooms and adjusting numbers in the basement. It may be located in the screening room on the first floor or the archive room on the second floor.
7.Battery (possible locations) : Install it in the security room on the first floor and open the escape door on the first floor. Possible locations are on the shelves in the large area below the basement map, in the basement treatment room, and on the shelves in the hidden passage room in the middle of the second floor. Note that only one of the three distribution boxes has electricity. After installation, try to see if there is electricity.

* Sacrificial items:
1. Gasoline (possible location) : The area where the ventilation valve is open in the basement.
2. Salt (fixed location) : On the kitchen table on the first floor.
3. Lighter (possible location) : Igniting the source of evil, possibly painted in the basement morgue

Note:
1. When exploring the map, pay attention to the clues on the paper strips and the patterns and numbers pasted on the wall. There is one pattern and number per floor.
2. There are a total of 6 blue treasure chests. There are 2 fixed locations in the basement (one at the bottom of the basement staircase and one in the room along the main basement road), 3 possible locations on the first floor (one in the small central room on the first floor, one in the room above the map on the first floor, and one in the bathroom), and 1 fixed location on the second floor (in the library). Among the 6 treasure chests, only one has an item - a crowbar. The other five are all empty.
3 .Only one of the three distribution boxes has electricity. After installation, it is necessary to test whether there is electricity.

Guide One. Clearing Strategy - Open two Doors (Clearing Conditions)
1. First floor Door: Complete the placement of offerings at the four corners of the first floor courtyard. The four graves are Emma, Judy, Tommy, and Adam. The four offerings are a pocket watch, a baseball, a teddy bear, and a sketchbook. The clues for the types of offerings to be placed at the four graves are respectively: Basement, first-floor tunnel, behind the chain-chained door beside the birth point on the second floor, attic
2. The second floor door (countdown for fire burning) : The dead tree in the center of the courtyard on the first floor needs to be burned. The required items and their usage sequence are salt bags, oil drums filled with gasoline, and two lamps.

The location and usage of the items reveal the plot:
1. Pocket watch (fixed position) : Hung on the corpse on the third floor, the chain needs to be cut with pliers. The corpse falls into the room on the right side of the bathroom on the first floor and is picked up.
2. Pliers (possible locations) : Shower room on the first floor, kitchen on the first floor, classroom on the second floor. Pliers are used a total of four times. Baseball (fixed position) : On the bookshelf of the library on the second floor.
3. Teddy bear (fixed position) : In the room with a hole on the left side adjacent to the bathroom on the third floor.
4. Sketchbook (possible location) : The room where the slides are shown in the screening room on the first floor - possibly in the library on the second floor, the classroom on the second floor, or the clergy room on the third floor (with many crosses on the wall). You need to push open the bookshelf that blocks the ventilation duct and then use a screwdriver to unscrew the air duct.
5.Screwdriver (possible location) : In the prison single room reached through the middle passage from the basement.
6. Rock salt: Brush it in a random box. Except for the box that can be brushed with rock salt, the remaining boxes are all empty.
7. Lock pickers (possible locations) : Kitchen on the first floor, dormitory on the second floor. There may be more than one .
8. Salt bag: It is made by grinding rock salt taken from the box. The rock salt is ground in the staff room on the third floor by a grinding machine to obtain salt bag.
9. A fuel tank filled with gasoline: To fill a fuel tank, two items are needed, namely an empty fuel tank and a hose. After taking these two items, go to the car in the courtyard on the first floor, place the empty fuel drum beside the car, and connect the empty fuel drum to the car's fuel tank with the hose to fill the empty fuel drum.
10 Empty oil drum (possible location) : Corner of the staircase on the third floor.
11. Hose (fixed position) : Attic
12. Lamp (Fixed position) : Placed in the Temple of Pain in the basement. To open the Temple of Pain, a cross is needed, and to retrieve the lamp, a rock knob .
13 is required. Cross (Fixed position) : Located in the prayer hall on the first floor. Before entering the prayer hall, one needs to touch the black vine with poison to eliminate it. 14. Poison: It needs to be synthesized in two bottles of reagent in the alchemy room on the third floor to eliminate the black vines that enter the prayer hall on the first floor. 15.Sub-reagents (possible locations) : Used for synthesizing poisons. The locations of the two bottles of reagents may be in the small room on the left side of the elevator room on the first floor, such as the kitchen on the first floor.
16.Rock Knob: Located in the upper and lower areas of the Pain Temple in the basement, install the rock knob on the platform where the lamp is placed and twist it to open the mechanical arm that seals the lamp to obtain Lamp .
17. Fuse (possible location) : It is used to be installed at the elevator shaft on the first floor leading to the basement to activate the elevator. In single-person mode, three fuses may be found, but only one is needed to start the elevator. The possible locations of the fuses are respectively in the technical corridor on the first floor, the classroom on the second floor, and the bathroom on the third floor.
18.Hammer (possible location) : Kitchen on the first floor, classroom on the second floor. It is used to break the dangerous wall with exposed wooden boards to explore area.

Three. Notes:
1. The clues for the types of offerings to be placed in the four graves are respectively located in: a prison in the basement, a tunnel on the first floor, behind a door chained beside the birth point on the second floor, and in the attic.
2. The pliers need to be used four times, namely to cut the chain of the corpse holding the pocket watch on the third floor, the chain of the gates on both sides of the courtyard on the first floor, and the chain of the birth point on the second floor to obtain the clues of the offerings needed for the tomb.
3.All the boxes except the one that can be painted with rock salt are empty.
4. The condition for opening the basement boiler room is that after removing the light from the Temple of Pain, the butcher will break through the wall leading to the boiler room when passing by the elevator's main power switch for the first time.
5. The sequence for opening the basement circuit breaker: Pull down the four sub-circuit breakers (one indicator light) first, and then pull down the main circuit breaker at the elevator shaft (four indicator lights).
6 Butcher Teleportation conditions: The player has not moved for a long time. The butcher turns into black smoke on the ground and teleports. Orphanage creatures chase the player's fingers. The player's butcher directly teleports the orphanage creatures.
7. During the countdown to the second escape door, take a photo of the butcher. The butcher will only feel dizzy but not disappear.

Hidden achievements (1)
1. Locker Survivor: Hide in the locker for 10 minutes.

Rare Achievement (6)
1. No Need for your toys: Complete any map without using a camera.
2. Lone Survivor: Complete any map in single-player mode.
3. Locksmith Master: Open 10 boxes (For achievements, you can open the mental hospital archive box separately. The 6 boxes in the mental hospital have fixed locations and are easier to find) .
4. Madman: Complete any map on Crazy Difficulty.
5. True Friendship in adversity: Help your friend get out of the trap (Only the butcher in the Orphanage map will release the trap).
6.Unchained: Cut open the chain three times with pliers.

Normal Achievement (21)
1. Why are you so serious: Taking a photo of a butcher.
2. Smiling: Taking a photo of a monitor creature (only on the mental hospital map).
3. Don't move: Take photos of orphan creatures (only on the orphanage map).
4. Photographer: Take 10 photos (butchers, watchmen creatures, and orphan creatures are all acceptable).
5. Wall-breaker: Destroys three walls with a hammer.
6. Hellwalker: The area that falls into after being caught by a butcher.
7. Eliminator: Move three obstacles.
8. Redeemer: In cooperative mode, if a player is caught by the butcher and falls into Purgatory, their body remains on the map and they can scream. Other players can find this player and tap them to wake them up.
9. Teamwork: Escape any map with friends .
10.. Leaving Foster Care: Orphanage Map Level .
11. Rest in Peace: Solve the puzzle of offerings needed for each of the four graves in the courtyard on the first floor of the orphanage .
12. Orphanage ceremony: Burn the dead tree in the center of the courtyard on the first floor of the orphanage.
13.Switch on: After turning on the four sub-switches in the basement of the orphanage, pull the main switch at the elevator to restore the power of the elevator.
14.Temple of Pain: To find the Temple of Pain in the basement of the orphanage, you need to open the door of the Temple of Pain with the cross in the prayer hall on the first floor.
15. The extractor: In the orphanage, use a hose to fill the fuel tank of the car in the courtyard on the first floor with an empty oil drum.
16.Salt Obsession: Grind the rock salt taken out of the box in the staff room on the third floor to turn it into a salt bag.
17. Alchemist: Mix two bottles of medicine in the alchemy room on the third floor to form a bottle of poison.
18. Lucky person: To open the first floor escape door on the mental hospital map and pull the power switch, batteries are needed. It is known that three batteries will be refreshed in the map, but only. There is one that has power and needs to be plugged into the power switch to check if there is power. When the battery is inserted for the first time and the power switch is pulled down, it shows that there is power.
19 .Decryptor: In the mental hospital, unlock the corresponding number in the basement of the decryption room to obtain the Evil Eye Completion achievement .
20. Asylum Ceremony: Burn the corpses on the third floor of the asylum to open the second escape door.
21. I'm Not insane: Complete the asylum chapter.