This is a walkthrough for beginners

- Difficulty is softcore
- Not suitable for speedruns or old school (cleared with only pistols)
- Prioritize acquisition of [Shotgun] and [Firepower Up]
- Because of this, the order of play is all over the place

- Most of the enemy spawn locations and item locations have been omitted

- The story is very interesting, so be sure to read the [Notes] if you find them

●MOD
　・Multi-Camera Mod 3
　・WeaponsOnBack3
　・RealisticWeapons3
　・Cyborg Slashy
　・Boomy TnA
　・AMA-ZOE: Muscular Body and Face Replacer　（from HAYDEE2）

●Enemies

- Headshots deal double damage. (Probably the opposite for Boomy, whose weak spot is the abdomen)

- If you get a headshot with a pistol, you can kill a Creeper (zombie-like enemy) with 5 shots, a Slashy with 3 shots, a Boomy (an explosive enemy) with 4 shots, and a Burgerman (an enemy that vomits) with 8 shots

- If you get a headshot with an enhanced pistol, you can kill a Creeper with 3 shots, a Slashy with 2 shots, a Boomy with 2 shots, and a Burgerman with 5 shots

- Boomy's explosion and Burgerman's vomit also damage enemies.

- Boomy explodes when you shoot it in the abdomen. You can damage surrounding enemies, but be careful as the range is wide.

- Enemy surprise attacks follow a pattern. Die many times to learn the pattern

2/2
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1. Remember that there is a locked breaker case behind the starting point


2. Press the DOWN button while holding on to grab onto the hold below


3. You can also hang from the steps


4. You can lead enemies to mines and defeat them


5. You can destroy mines with a pistol


6. Use the [stick] as a jack


7. Don't forget that there is a [jammer] behind you


8. You can't pass through unless you leave your [driver] (don't leave your pistol)


9. Congratulations! You've arrived at [CENTRAL HUB]. You've cleared the TUTORIAL.

1. Save at [UTILITY]


2. Head to [ADMINISTRATIVE]


3. [Checkpoint] Remember that there is a locked breaker case here as well


4. [Alley] Two Slashies will ambush you. As a basic rule of HAYDEE, you can get items from the fallen HAYDEE


5. [Dining Room] Make a detour and go get the [Pliers] (red circle). You can get a mine with the pliers. It's hard to see, but there is a HAYDEE with a bullet in the left corner


6. Don't forget to go to the [Kitchen] at the back of room, where there is a save point, [Knife], and [Case]: [Lockpick]


7. [Reception] Take your time and kill the Creepers*2 on the left and the Boomy on the right. There is a HAYDEE with a [Lockpick] in the back left


8. Take a rest at [UTILITY].

1. Head to [TECHNICAL]


2. Collect two mines in the [Hall]. From the entrance, head to the right and go to [Service Hall] - [Administrative].


3. Go into [Administrative] - [Utility] and get an [SMG].

[SMG] has a large recoil and the aim will shift upwards during rapid fire.
Aim for the torso rather than headshots when panicking. You can also use it to save pistol ammo.


4. Escape from the back to [CENTRAL HUB] and take a rest.


5. [TECHNICAL] - [Hall] Next, go to [Stairs] on the left. There is an item box just before the [Stairs] in the [Hall].


6. Go down the [Stairs]. Be careful of Burgerman and Slashy. When you reach the [Transfer Hall], take a rest at [Utility].


7. You need a crowbar to remove the barricade at the back of room. The battery puzzle on the right is the most difficult mechanism in the game.


8. Eliminate the Boomy that will get in the way later at [Transfer Hall] - [Supervisor].


9. Enter [Transfer Hall] - [Maintenance] and go down the steps in front. Eliminate Slashy along the way.


10. Head to the other side of the fence and operate the breaker. The towel is a hint for the route.


11. After the fence opens, go down the steps in front and head right. (This is where you eliminated Slashy.)


12. It's very confusing, but the towel is also a hint here.


13. You've come out at [TUTORIAL] - [Checkpoint]. You can retrieve the [Driver].


14. Take a rest at [UTILITY].

1. Go to [TECHNICAL] - [Hall] - [Stairs] - [Transfer Hall] - [Elevators].


2. Go to the right in the passage.There will be a Creeper and a Burgerman.
When fighting Burgerman, it will be easier if you find a position where the player's shots can hit him but the vomit can't reach him.
In this passage, the vomit won't hit you if you're in the position shown in the image.


3. In [Elevators Control], turn on the breaker.
Also, insert [Power Card "A" (yellow device)] into the machine next to it. If you also insert [Power Card "B"], you can start the elevator in [Stairs].
(I wandered around with the yellow device for a few hours without noticing this mechanism.)


4. Go back to the passage and go to [Monitoring].
In the [Monitoring] passage, there are two Slashys at the arrow's location.It's easier to approach from the right and eliminate her.
There's a Burgerman in the [Monitoring] room, so eliminate him.


5. From the [Monitoring] room, enter the ceiling duct.


6. Enter the [Supervisor] where you previously eliminated Boomy and obtain [Battery"B"]. There are items in the SUPPLY box, so don't forget.


7. After obtaining [Battery"B"], take a rest in the [Transfer Hall] - [Utility].

1. Insert the battery into the Blue Line in [Utility].


2. Operate the rotary switch to change the direction of the line and head to the [Relay Hall].


3. In the [Relay Hall], switch the Green Line on the floor to the [Main Gate] direction. Be careful of mines, Boomy, and Slashy.


4. Enter [Relays] and operate the rotary switch to make the Green Line and Red Line face up.


5. Head to the [Main Gate] and get the [Power Card "B"] at the back of room. Also, turn the Blue Line up. The gate at the back of room that requires three batteries will come later.


6. Return to the [Relay Hall] and operate the rotary switch to open the gate and proceed. Go under the floor and proceed through the athletic course.


7. When you return to the floor, don't forget to operate the breaker to open the gate. When you return to the [Transfer Hall], Creepers and Slashy will attack you.


8. Head to [Elevators Control] to activate the elevator.


9. On your way back, be careful of the two Slashys in the [Monitoring] passage.


10. When you return to [Relay Hall], you will find Slashy and Boomy. Run to the location in the picture to deal with them easily.


11. Insert the battery into the Green Line in [Utility].
If you have a [Screwdriver] and [Lockpick] in the [No Weapons] area, you can get items, so take them.


12. Head to the [Hall] on the 2nd floor. The elevator on the way is now available. Be careful of the Burgerman and Slashy in the [Hall].


13. Enter the [No Weapons] area. (You will visit this area many times from now on.) There is an item box nearby, but it is better to drop your weapons right near the gate as you may be attacked by enemies.


14. After entering [Restricted], enter the hole on the right and turn on the four switches under the floor to turn on the breaker.


15. Switch the Red Line on the floor to the direction of [Technical Hub].


16. Your next objective is to get the [Bolt Cutters] in the [Duty Room], so turn the switch at the entrance online.


17. Follow the green power cord to [Technical Hub] - [Lavatory]. Switch the Blue Line rotary switch on the floor of [Technical Hub] to the direction shown in the image.


18. Press the GRATE button to head to [Binary]. Wait in the toilet and then head there while escaping from Slashy.


There is a [Pouch] in the room, but you cannot get it at this time because the Red Line has not reached it.


19. Be careful not to pass in front of the open cage in [Binary] as you will be attacked.
Immediately to the right after entering the room, there is a mine and a duct that can be entered with a [Screwdriver]. (There is a [CASE]: Shotgun Ammo at the back of room)


20. Operate the switch to open the door (ZT display) of [Offices]. Be careful of the route as it is linked to the opening and closing of the cage.


21. Head to [Offices] - [Dispatch] and turn on the breaker.


22. Head to [Technical Hub] - [Duty Room]


23. Get [Bolt Cutters]. The [Bolt Cutters] can unlock the locked breaker case. (The breaker in this room is an alarm so enemies will attack you)


24. Return to [Hall]. You cannot pass through the gate because the mines are weapons. There is a Burgerman, so pick up the pistol and kill him.


25. Insert the battery into the Red Line at [Utility].


26. Take the elevator at [Stairs] to the 3rd floor.


27. Enter the [Technical Hub] and head right. Be careful of Slashy on the right and Creeper on the left.


28. If the Red Line has reached you, the duct will open.


29. At the end of the athletic course, you will find [Ammo UP].
Use [Ammo UP] only when your remaining ammo reaches 0.


30. Return to 1F, collect the battery, and return to [CENTRAL HUB].

1. Go through [TUTORIAL] and head to [MEDICAL]. You will need [Bolt Cutters].
Don't forget to collect the [Jammer] after passing the [No Tools] gate.


2. Go through [Way down] - [Pipes] - [Shortcut] to return to the starting point.


3. Use the [Bolt Cutters] to open the lock and enter [MEDICAL].


4. Go through the passage and take a rest at the back of [Storage]. (The [Battery "D"], which is the last key to the last stage, can be seen at the back of the room in front of [Storage].)


5. Take the [Jammer] and head to [Utilities] (it's very dark and the door is hard to see)


6. Go to the [Incinerator] in front and get the [Shotgun].
The [Shotgun] is a very, very strong ally for beginners.
Creepers can be killed with 2-3 shots, Boomys with 1-2 shots, Burgermans with 3 shots, and Slashies with 1 shot.
It is very useful in melee battles because it can kill Slashies with one shot. However, there are few bullets that can be picked up, so use it wisely.


7. Collect the [Jammer], end your search for [MEDICAL], and return to [TUTORIAL].


8. Return to [Pipes] and go through the lowest duct to collect [Battery"A"].


9. Place the [Jammer] and go through. Go through [Way down] - [Pipes] - [Shortcut] - [Quarantine] - [Hall] to return to [CENTRAL HUB].

After acquiring the [Bolt Cutter] and [Battery"A"], you can explore various places, but first prioritize acquiring [Firepower UP].
([Fuse] *2, [Pouch], and [Crowbar] can be left for later.)

1. Head to [ENGINEERING]. You will need [Battery] *2.


2. Head to [Hall] - [Stairs] - [Level B Hall].


3. Enter [Elevator L] (B floor) and place a [Battery] in the socket behind the cargo.


4. Climb the cargo and place a [Battery] in the socket behind the cargo in the same way.


5. Exit [Elevator L] (C floor) ([Level C Hall]) to call the elevator.
The elevator can be operated by placing a battery in the socket on the floor where the cargo is and the socket on the floor you want to call it.


6. Head to [Stairs] - [Level B Hall] - [Elevator L]. After collecting the [Battery], go down the elevator shaft.


7. When you arrive at [Level G Hall], call the elevator, then collect [Battery "C"] from [Elevator L] (G floor).
Rest at [SAVE] in front. (There is also [Case]: Rifle Bullets)


8. Head to [Transit A] - [Substation]. Remember that there is a door that requires a [Torch]


9. Enter [Control] and go through the duct at the back. (There is a mine, so don't forget to collect it)


10. There is a Burgerman at the end of the door, so quickly hide in the shadows. There is a rush in this room, so if you are worried, take a [Shotgun].


11. You can get a [Wrench] in the next room. The [Wrench] can unlock closed doors. (There is also [Case]: Rifle Bullets)


12. Return to [Control] - [Substation] - [Transit A] - [SAVE].


13. Place the [Battery] and enter the [Stairs], then climb up to [Level C Hall] and retrieve the [Battery] from [Elevator L].


14. Return to [CENTRAL HUB].

1. Head to [MEDICAL]. You will need a [Knife] and a [Wrench].


2. Head to [(MEDICAL) Hall] - [Utilities] - [Registration]. Be careful, Burgerman and Boomy will appear in the passage.


3. [Registration] is difficult. I shot the Slashy at the back to lure her out, then killed the Creeper and Burgerman in that order.
There is a [Lockpick] there.


I can't get into [erotic massage]. I think it's a bug.



4. Go through the water and head to [North Wing]. (Go to [Surgery] after [gaining firepower UP].)


5. Cut the tape with the [Knife] to enter the room and get a [Yellow Card]. (You won't need the [Knife] from now on, so you can throw it away.)


6. When you go outside, you will find Burgerman and Slashy. Also, when you approach the breaker to enter [Interns] (save room), Slashy will appear.
Be careful, there are mines inside [Interns]


7. Enter [Surgery] in front of [Interns] (you will need [Wrench]) and get [Firepower UP]. (You won't need [Wrench] from now on, so you can discard it)
Use [Firepower UP] on your pistol
If you get a headshot with an improved pistol, it will take 3 shots to kill a Creeper, 2 shots to kill a Slashy, 2 shots to kill a Boomy, and 5 shots to kill a Burgerman
Your annihilation power will increase, and you will save a lot of bullets.


8. Head to [Wards]. (There are a lot of enemies ahead, so if you're worried, take an [SMG])
HAYDEE on the bed at the back of room has a [Lockpick]. Don't forget the SUPPLY box


9. This is the [Washroom]. 2 Creepers and 1 Slashy will appear in a small area.


10. [Fail State] is a homage to HAYDEE. There are a lot of items, so collect them.
It's better not to use the [Orange Card].


11. In [Office], if you go forward, you will be sandwiched between a Creeper and a Slashy. Go forward from the right side.
You can get a [Button]. (There is also a [Case]: Rifle Bullet)


12. After [Research] - [Maintenance], use the [Button] to open the gate. There is a [Hammer] ahead, so get it and break the wall to go forward.
Be careful of Slashy and mines at [Laundry] beyond the wall. (There is also a [Case]: SMG Bullet)


13. Return to [CENTRAL HUB].

It doesn't matter if you clear [ADMINISTRATIVE] first.

1. Head to [ENGINEERING].


2. Go to find the [Fuse] *2 to operate the elevator: R.


3. Head to [Stairs] - [Level B Hall] - [Fork] - [Office Hall] - [Office] (Save Room). (There is also a [Case]: Rifle Bullets in [Office])


4. Return to [Fork] and enter [Boiler]. Climb up and head to [Records]. There are many items.


5. Enter [Records]. Be careful of the mines. Use the [Screwdriver] to go through the duct. HAYDEE in the duct has a [Lockpick].


6. Go through the athletic course and get the [Pouch]. (Your item slot will increase by two)


7. Before leaving the room, collect the [Lockpick] from HAYDEE. At the end of the duct are the [Stairs].
If you stay there you will take fall damage, so move wisely.


8. Head to [Stairs] - [Level B Hall] - [Fork] - [Boiler] - [Records].
Ahead is the [Warehouse] where intense fighting will occur, so it's a good idea to bring a [Shotgun] or [Mine].


9. In the [Warehouse], there are 4 Creepers and 1 Slashy at the start. There is a [Fuse] where Slashy was, so don't forget to collect it.
When you press the button, 2 Creepers, Slashy, Boomy, and Burgerman will appear.
In my case, I ran through after pressing the button and killed Burgerman first, then waited in the passage below to deal with him.
In fact, if you only obtain the [Fuse] and return to the original route, [Warehouse] - [Level C Hall] will not be open, but you will not have to defeat most of the enemies.


10. Enter the [Level C Hall] through the opened door and return to [Stairs] - [Level B Hall] - [Fork] - [Office Hall] - [Office].


11. Enter [Sorting] and go through the athletic course to enter [Watchman].


12. Get [Fuse] at [Watchman].


13. Head from [Office Hall] to [Office]. Be careful of Slashy and Boomy on the way.


14. The [Bot Arena] you are heading to is the most difficult place in the early stages, so beginners are recommended to use [Shotgun].


15. Head to [Office] - [Office Hall] - [Fork] - [Level B Hall] and use [Fuse] *2 to enter [Elevator R].


16. Climb the cargo and enter [Level C Hall]. Press the button on the way to open the gate.


17. Enter [Servers]. (Be careful of the mines in front.) Turn on the breaker at the back of room and enter [Bot Arena].


18. This is [Bot Arena]. First, collect the items on the upper step. (Bullets and Healing Potions)


・When you go down to the arena, Slashy*4 will attack you in order. (The last two will appear after moving a certain distance.)


The timing of enemy appearance will change depending on the order in which you operate the valves.

Example)
・Boomy will appear if you turn the valve on the left side of the exit halfway.


・When you turn the valve on the right side of the exit, the gate will open, the Slashy outside the gate will start moving, and Slashy and Burgerman will appear.


・Burgerman and Slashy will appear if you turn the valve on the left side of the crowbar halfway.


・Burgerman and Slashy will appear if you turn the valve on the right side of the crowbar halfway.


・Boomy will appear if you turn the valve on the right side of the crowbar all the way.


19. Get the [Crowbar] and exit [Bot Arena]. Be careful as Slashy will appear in the passage.


20. Return to [CENTRAL HUB].


Continued in 2/2. . .