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Full-game spoiler warning! Just a simple guide to help getting all of the achievements. I would recommend only using this guide after beating the game; some icons and descriptions are a bit revealing. I’ve put tags over the big ones though.
One more time before we start, FULL-GAME SPOILER WARNING!
For these first achievements, you will get these just by completing Somnia.
Mizuki Chapter 0: Clear Ryuki’s Somnium.
Ryuki Chapter 1: Clear Chikara’s Somnium.
Ryuki Chapter 2: Clear Tokiko’s Somnium.
Ryuki Chapter 3: Clear Komeji’s Somnium.
Ryuki Chapter 4 R1: Clear Amame’s Somnium.
Ryuki Chapter 4 R2: Clear Shoma’s Somnium.
Ryuki Chapter 5 R1: Clear Iris’ Somnium.
Mizuki Chapter 1: Clear Kizuna’s Somnium.
Mizuki Chapter 2: Clear Gen’s Somnium.
Mizuki Chapter 3: Clear the Masked Woman’s Somnium.
Mizuki Chapter 4 M1: Clear Tearer’s Somnium.
Mizuki Chapter 4 M2: Clear Lien’s Somnium.
13. All’s Right With The World
Mizuki Chapter 5 M1: Clear Amame’s second Somnium.
For these next achievements, you should again get most by just playing through the game.
14. Komeji and Shoma END
Ryuki Chapter 4 R2: Clear the Komeji/Shoma route.
15. Explosion END
Ryuki Chapter 5 R1: Clear the Explosion route.
16. Resolution END
Epilogue: Clear the Resolution route.
WARNING: THIS ICON HAS END-GAME SPOILERS
17. Gen and Amame END
Mizuki Chapter 5 M2: Clear Gen/Amame route.
18. Kizuna and Lien END
Mizuki Chapter 5 M3: Clear Kizuna/Lien route.
Ryuki Diverge: After learning the nil number in the Epliogue, head back to Ryuki Chapter 1 and tell Tokiko that you are a Frayer. The nil number is actually different for each player, so remember to write it down. Input the number and progress through this final ending.
20. Destination Atami END
Ryuki Chapter 3: Ask the Lemniscate receptionist out to Atami five times.
These next achievements are awarded for completing the VR sections without making any mistakes.
21. Case Closed: Dead at Dvaita
Ryuki Chapter 1, VR Section
1. How did the lights get turned off?
Examine the corpse.
2. How did the corpse fall down?
Select “The rigor mortis softened”.
3. Why did the corpse burn?
Examine the corpse again.
22. Case Closed: Daring Escape at Naix
Ryuki Chapter 2, VR Section
1. What should we do with the statue?
Select “Use force”.
2. What should we do with the statue?
Select “Use force” again.
3. What is the code?
Multiply the numbers in each column.
4, 3*3, 2*0*2, 1*1*1*1, 2*0*2, 3*3, 5 -> “4901095”
23. Case Closed: Amame’s Actions
Ryuki Chapter 4, VR Section
1. Where did Amame go first?
Examine the rope.
2. Where did Amame go next?
Examine the camera tripod.
3. Where did Amame go next?
Examine the electric kettle.
4. Where did Amame go next?
Examine the west door.
24. Case Closed: Corpse Transport
Mizuki Chapter 1, VR Section
1. How was the body carried?
Select “Over Soccer field”.
2. Where are the prints?
Examine the halfway line.
3. What was used to carry the body?
25. Case Closed: Mystery at Yoyagi
Mizuki Chapter 2, VR Section
1. What do the hints mean?
Line up the clues “AEF” and “RLE”. By alternating letters, you can spell “ALFREE”.
2. What place has to do with ALFREE?
Examine the vending machine.
26. Case Closed: Horadori Institute’s Holding Cell
Mizuki Chapter 3, VR Section
1. What did X do first?
Examine the power switch.
2. What did X do next?
Examine the hidden switch.
3. What did X do next?
Examine the tooth.
4. What did X do last?
Examine the foot switch.
27. Case Closed: Blackout Amusement
Mizuki Chapter 4, VR Section
1. What did S do?
Select “Removed clothes from suitcase”.
2. Why did they need to make room?
Examine the corpse.
3. What did S do next?
Examine the stage floor.
The next achievements are awarded for collecting items. This includes files, hidden eyeballs and [Adult]-type Eyeballies.
28. Informant: Persons
Collect all Persons files.
You should get this by playing through the game.
29. Informant: Appendix
Collect 90 Appendix files.
I’ve linked a guide by Mori if you need help getting any. I was able to get more than 90 files without having to replay any section, but if you don’t examine a lot of items you may miss a few initially. To get the file, just replay the chapter and select the guide’s specified option.
30. Informant: Trivia
Collect 50 Trivia files.
Again, if you need help getting any, look at Mori’s above guide.
31. Informant: Dream Album
Complete the Dream Album.
You’ll need to complete every Somnium with more than one second remaining and collect every hidden eyeball to unlock every page in the Dream Journal.
Most Somnia can be completed with 1s remaining fairly easily, just write down or memorise codes in ones like Nonentity Incognito (Tearer’s) and Novel Ingress (Lien’s). Remember that for Gen’s Somnium, you can get a 1/5th Timie by interacting with Amame before interacting with the food.
For collecting every hidden eyeball, look at the next achievement.
(Weird sidenote: you don’t actually have to buy any of these items to get the achievement!)
32. Cornea Collector
Find all the hidden eyeballs.
There are five eyeballs in every Somnium, and some can be missed very easily. If you need help finding any, Mori has another great guide.
Collect 20,000 eyeballs.
You will probably get enough before completing the Dream Journal. If you need more, give your Eyeballie some more attention as raising a new Adult type will reward you with 1000.
34. Gacha Got Ya
Collect all [Adult]-type Eyeballies.
There are eight Adult-types to collect, all based on characters from the first game.
For the first stage, the pet will evolve into a Child depending on which stat is the highest.
For the adult stage, a different stat may need to be the highest.
Evolves from Mizuki-ie:
|Date-ie||Brave and Loving|
|Moma-ie||Impish and Crazy|
Evolves from Iris-ie:
|Boss-ie||Brave and Impish|
|Hitomi-ie||Loving and Crazy|
Evolves from Ota-ie:
|Pewter-ie||Loving and Impish|
|Mama-ie||Brave and Crazy|
Evolves from Amame-ie:
|So-ie||Loving and Crazy|
|Ritsuko-ie||Brave and Impish|
If you need more help with this one, check this guide: Gacha Got Ya Achievement Guide
The following achievements are awarded for doing various things in Somnium.
35. An Awkward Halloween
Mizuki Chapter 0: In Ryuki’s Somnium, wear all equipable items.
This is only possible on the right branch of the Somnium.
To wear the pumpkin, interact with the back shelf in Boss’ room before opening Mental Lock #3.
To wear the shoes, interact with them after shooting Ryuki.
To equip the metal pipe, interact with it after equipping the shoes.
After putting on all three items, you should get the achievement.
36. Quiz King
Ryuki Chapter 4: Answer every question correctly in Amame’s Somnium.
The correct answers are as follows:
1. Choose the Vokeman (as Beethoven’s Symphony No. 9 is playing).
2. Choose the Elephant Trinket (as Beethoven’s 5th Symphony is playing).
3. Choose the One-Wheeled Robot (as Bach’s Air on G String is playing).
4. Choose the answer on the right, FREEMASONS.
5. Choose the answer on the right, CHUPACABRA.
6. Choose the answer on the right, SUBLIMINAL.
7-10. Interact with the Magazine, Mysterious Person, Mizuki and Kizuna.
11-20. Select either option.
Upon completing the Somnium, you should get the achievement.
Also you can check: Quiz King Achievement Guide
37. Kusemon Master
Ryuki Chapter 5: Hatch the Black and White Bear and the Wanderer during Iris’ Somnium.
Pick up an egg by interacting with it (two certain topiary are eggs). Be sure to hatch the first egg before picking up the second, otherwise the first will be overwritten. It is recommended to do this in Unlimited Psync, as you hatch the egg by just walking around.
Once you’ve hatched Monokuma and Shiren, you should get the achievement.
Ryuki Chapter 4: Narrowly avoid curse by Adorooster in Shoma’s Somnium.
This is identical to the Adorabbit easter egg in the first game. To see pure terror, lift the refrigerator after unlocking Mental Lock #3. Then, just interact with the pot to the left.
After seeing this scene play out, you should get the achievement.
39. All-Japan Shoe Toss Champion
Mizuki Chapter 1: Toss your shoe with max power at the end of Kizuna’s Somnium.
This one just comes down to timing. Press the directional button when Aiba reaches the peak of her swing to get the best result.
You should get the achievement after the shoe lands.
40. Surviving Hell’s Kitchen
Mizuki Chapter 2: Complete three rank 3 dishes in Gen’s Somnium.
This one is really easy, and you’ll need to complete one rank 3 dish to progress in the Somnium anyway. If you’re having trouble with the input strings, just mash as there is no penalty for a wrong input.
After cooking all three masterpieces, you should get the achievement.
41. Kunoichi vs. Mad Scientist
Mizuki Chapter 3: Clear the left branch of the Masked Woman’s Somnium without failing any QTEs or getting a Game Over.
If you’re having trouble with the QTEs, lowering the difficulty is always an option. Regardless, try not to get caught by Chikara and route the Somnium as efficiently as you can.
Once you complete the Somnium, you should get the achievement.
42. High Inquisitor
Mizuki Chapter 5: Present all evidence without mistakes in Amame’s second Somnium.
Similar to the VR sections and the Quiz King achievement, this one is awarded for not making any mistakes during logic segments.
Mental Lock #1
1. Present What Amame Said in Yesterday’s Psync to Amame.
2. Present Key: Information in Sound to the Vokeman.
3. Present What Amame Said in Yesterday’s Psync and Person Discussing Nirvana Initiative to Amame.
Mental Lock #2
4. Present Key: Right Side Secret to the Naix’s Teachings book.
5. Present Naix’s Teachings and Broken Glass Doll to the Mysterious Person.
6. Present Naix’s Teachings, Broken Glass Doll and 4901095 to Amame.
Mental Lock #3
7. Present Did You See His Murderer, Tearer? to the body bag.
8. Present Key: Information in Sound to Shoma’s headphones.
9. Present Key: Right Side Secret to the damaged iron mask.
10. Present all remaining evidence to Amame.
Upon completing the Somnium, you should get this achievement.
43. Hanako’s Nightmare BAD END
Mizuki Chapter 5: Find Hanako in Amame’s second Somnium.
After unlocking the first Mental Lock, select “Read” on the scattered magazine. Aiba will repeat the code ↑ ↓ ↑ ↓ ← → ↓ ↓. Input this code before closing this text box and Hanako will appear.
You will need to retry the Somnium after, and as a result the code does not work on Unlimited Psync mode. After Hanako appears, you should get the achievement.
The last set of achievements are awarded for remaining miscellaneous tasks throughout the game.
44. Stan Boss.
Boss’ Room: Examine every object.
There are supposedly 54 objects to interact with. Once examining them all, you should get the achievement.
45. He Who Shall Not Be Named
Various locations: Forget Kaniza’s name seven times.
Where to find Tsutsugamushi (or whatever his name is):
1. Converge Chapter 0: at the Stadium.
2. Converge Chapter 0: in Studio Dvaita.
3. Ryuki Chapter 4: in the Naix Japan Office.
4. Ryuki Chapter 5: in Studio Dvaita.
5. Mizuki Chapter 2: at Yoyagi Park.
6. Mizuki Chapter 4: at Misetan Amusement Park.
7. Epilogue: in Sunfish Pocket.
Upon seeing every conversation regarding his name, you should get the achievement.
46. Courtesy Chocolate
Mizuki Chapter 4: Give out chocolate to Detective Ushidera, the Police Officer and Shoma.
Where to find these characters:
1. Detective Ushidera: at Misetan Amusement Park (M1 Route).
2. Police Officer: at Misetan Amusement Park (M1 Route).
3. Shoma: in Central Hospital (M1 Route).
4. Shoma: in the Enda Residence (M2 Route).
After giving out all four pieces of chocolate, you should get the achievement.
47. Nu-Folk Anthem
Ryuki Chapter 1: Listen to Ryuki’s weird song.
Select “German suplex” when talking to Iris in Sekiba High. You should get the achievement when the conversation ends.
48. YOU FOUND IT!
3rd Class Cabin: Seek a way out!
Seek a door that carries a … or I guess a 5 in this case. If you’re having trouble with this room, go play 999 (please).
Upon completing all above 48 achievements, you should unlock…
49. nirvanA Initiative