Before you get started, there are 3 major bugs in this game you should be aware of.

1. The Cocoon achievement is currently unobtainable, but I provided a fix.
   https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3330092373
   
2. Going for the Dead Dream achievement ending will autosave the game and lock you at this ending's credit scene and delete all your previous saves. However, I provided a fix.
   https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3330113623
   
3. For the Yume Nikki achievement, it can prevent you from unlocking the Dead Dream achievement ending depending on the choices you make after unlocking this achievement. I recommend you attempt this achievement after getting all 3 endings. Check the achievement for more details.
   
   I didn't bother trying to figure out a fix for this since most people will probably try to get all the endings first before attempting this achievement. If you did get locked from getting the Dead Dream achievement, you can load an earlier save not too far from here and speed run back to this point of the game.

I recommend you back up your saves when you reach Chapter 0 (Endings Chapter) in case you might lock yourself to one of the endings or the game deleted all the saves. The saves are in the www\save directory of where you installed Dead Dreams.

I highly recommended you apply both fixes before attempting these achievements to save time. With those two issues fixed and the third issue noted, here's all the achievements listed in chronological order.

Mira
My old friend.
Unmissable

When you're at the garden maze for the first time, head to the north end of the garden. You'll see the dog/wolf headed man near the big tree. Talk to him. You have to talk to him before you can ascend up the tree.

Misstep
This is the end.
Unmissable

Entered the second hole in the tree.

You'll see a bear trap up ahead. Perfect for catching something.

After solving the song puzzle, you'll be chased by a monster.


Lure the monster to the bear trap.

Cradle
Meet your baby.
Missable

During the looping hallway part where you need to find all the fetus puzzle pieces, the month will increase each time you loop. Eventually, the monster will appear on September or October randomly.

If you hear a woman's heavy breathing, then it'll be in September.

If you hear a baby, then it'll be in October.

The monster will be waiting past the radio. You must choose Yes to turn off the flashlight to let it pass you.

After choosing Turn it up, let the monster get you instead of running for the exit up ahead.

Cocoon
Check the toilet.
Missable

WARNING: This achievement is currently unobtainable due to a bug, but I provided a fix below.
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3330092373

After solving the fetus puzzle, you'll be in a medical office.

Enter the bathroom to the right.

Open the only unlocked toilet stall in the middle.


Choose Yes to look inside the toilet.

Something will display for a second followed by something else after a second or so.

Easter egg
M-A-R-I-O?
Unmissable

Inside the big empty morgue room, there are 3 mortuary cabinets at the back.

The middle mortuary cabinet opens as you try to leave. Enter it.

You need to find 3 notes in this area.

After reading 3 notes in this area, a monster will chase you and touch you before disappearing.

After it disappeared, multiple monsters will hunt you down. When one of them attacks you, the achievement is unlocked.

Watcher
Do you see her?
Missable

At the start of this chapter, go up to the window.

Choose Yes to use the spyglass.

Chuck
Water the plant.
Missable

At the start of this chapter, head left past the telephone to the left end of the living room.

Choose Yes to water the plant.

Inferno
A little one.
Unmissable

Hangman
Fate.
Missable

After noting the 4 phone number digit clues, head over to the telephone.

Choose Yes to pick up the phone.

After solving the telephone puzzle, enter the unlocked room.

Interact with the contraption at the back 3 times.

Now, you'll be playing a game of Hangman.

You need to answer 3 questions.

Answer at least 1 question correctly for the Inferno achievement.
Answers: Crow's Mansion - Explosion - My psychoanalyst

Answer all questions incorrectly for the Hangman achievement.
Credit:

Originally posted by A.Marx:

Hangman is given for losing the "hangman" game

Trust
Good choice?
Missable

Distrust
Good choice?
Missable

After the flashback of Thomas as a child, you'll be adult Thomas again.


After you return back to near the entrance of your apartment, you'll see a sword on the ground.

Choose Yes to pull out the sword.

You'll be with Liam. The choice you make doesn't affect the story. It's only for these two achievements.

Choose Trust him with the sword for the Trust achievement.

Choose No for the Distrust achievement.

This chapter has no achievements.

Instrumentality
Accept the offer.
Ending

In this chapter, continue left to ascend the tree.

Along the way are 3 gems you have to interact with. The blue, yellow, and green gems.



You must choose Accept for all gems.

At the top of the tree, interact with the switch.

Choose Do nothing to get this ending.


Credit

Originally posted by A.Marx:

"INstrumentality" if you accept them and don't touch the switch.

Dead Dream
Perfect dream.
Ending

WARNING: Going for this specific ending will autosave the game and lock you at this ending's credit scene and delete all your previous saves. However, I provided a fix below.
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3330113623

In this chapter, continue left to ascend the tree.

Along the way are 3 gems you have to interact with. The blue, yellow, and green gems.



You must choose Reject for all gems.

At the top of the tree, interact with the switch.

Choose Do nothing to get this ending.




Credit

Originally posted by A.Marx:

There's also "Dead Dreams" ending which you'll get if you reject all the gems and don't touch the switch.

OFF
Pull the switch.
Ending

In this chapter, continue left to ascend the tree.

Along the way are 3 gems you have to interact with. The blue, yellow, and green gems. It doesn't matter whether you accept or reject the gems.



At the top of the tree, interact with the switch.

Choose Flip the switch to get this ending.


Credit

Originally posted by A.Marx:

You can get "OFF" ending by deciding to end the frontier as Aaron inside the system.

Yume Nikki
Dream Diary
Secret

WARNING: If you haven't unlock the achievements for the 3 endings yet, I urge you to do one of the following:

1. Make a backup of your Chapter 0 saves. [Recommended]
   
2. After unlocking this achievement, you'll be transported to a new area and you can explore around. You have to make 5 choices to unlock the exit. Don't enter the exit. Instead, quit to the main menu to load your save to get the endings.

Otherwise, depending on your 5 choices, if you enter the exit, the game will autosave those choices and possibly lock you to the Instrumentality ending.

In this chapter, there are 2 doors you can interact with.

The north door shows some text talking about a door_001 that leads to dream_diary, but the password can't be read.

The south door requires a password to unlock. This is the door_001 for this achievement.


Credit
The developer provided this hint:

Originally posted by A.Marx:

There's a famous RPG Maker game which you could describe as Dream Diary :))

There's a Japanese RPG Maker game called ゆめにっき which literally means Dream Diary. The password to unlock the door is the pronunciation of ゆめにっき: YumeNikki



After unlocking the door, you'll be at the garden again. This time there are several doors you can enter.

Credit
Here's what the doors lead to according to the developer:

Originally posted by A.Marx:

so basically chapter 0 contains a bunch of Demo maps with minimal narrative importance. Cut content, ester eggs or imagery that went nowhere, stuff like that. Probably some extra lore, that didn't fit well with the rest of the game.

As you're exploring, there are 5 areas with a person or monster that will come to you.

• A monster at the beach at the south end of the garden below the stairs.
  
• A red pant person at the gallery.
  
• A yellow-haired person at the outdoor grass area where several groups of people are scattered.
  
• A monster at the upper right corner to the right of the escalator in a dream-like area. Watch out for an annoying monster that will catch you and kick you out of this area.
  
• A black-and-white striped shirt person at the southwest side of the subway.

Just like the gems, you can accept or reject them. After you accept or reject all the people/monsters, you can ascend the tree in the garden again to return to the beginning of Chapter 0.


There's a bug relating to the 5 choices you make here. If you choose to reject all of them, you won't run into any issues. However, if you choose to accept them, there's a possibility that the game will register those specific choices as if you're accepting the gems that lead to the Instrumentality ending. So, after you leave this place, the game autosaves your choices to the same autosave as Chapter 0 and returns you to the start of Chapter 0. Regardless of what choice you make with the gems as you ascend to the switch at the top of the tree, you'll always get the Instrumentality ending. You can't get the Dead Dream ending anymore unless you load an earlier save and get back to Chapter 0 again.

The reason for this bug might be that the variables to check if the player accepts or rejects the gems are global instead of local. So, when the game transports the player from the beginning of Chapter 0 to the new area, it's not loading a new map. The new area and the starting area of Chapter 0 are on the same map. Only the player has been moved. So, the variables continue to carry over when the player moves to different areas. The developer might have set the choices of the gems and 3 of the 5 choices of those people or monsters to the same 3 variables. That's probably why if you accept them, the game thinks you accepted all the gems and gives you the Instrumentality ending.