The recent update for That’s Not My Neighbor introduced three new achievements: Nightmare, Nightmare Quiz, and Cosmos. To get the Nightmare achievement, you need to engage in a specific game mode, while the Nightmare Quiz will test how well you know the game’s trivia with seven questions. For Cosmos, make sure to answer all of Chester’s questions correctly during Campaign Mode.
To unlock all three new achievements, follow these detailed steps and use the provided answers.
How to Unlock the Nightmare Achievement
Achieving the Nightmare achievement involves entering Nightmare Mode and experiencing gameplay until you revert back to Campaign Mode. It’s not necessary to win or complete every single challenge in Nightmare Mode; simply playing through is enough.
Here’s how to do it:
- Launch Campaign Mode and play until you encounter a masked individual distributing flyers about a clown.
- Accept the flyer he offers.
- Grab your phone and dial 6666.
- When prompted to enter Nightmare Mode, select Yes.
- Simply play until the game transitions you back to Campaign Mode.
The Nightmare achievement will unlock as soon as you return to Campaign Mode.
How to Unlock the Nightmare Quiz Achievement
To secure the Nightmare Quiz achievement, enter Nightmare Mode and answer a series of seven questions accurately. These questions appear sequentially, so you can complete them all in one attempt.
Use the correct answers listed below to ace the quiz.
| Question | Correct Answer |
|---|---|
| What is the scientific name of the Australian animal that changes dramatically in appearance outside its natural habitat? | Psychrolutes Marcidus |
| What is the only sport that allows you to punch your opponent in the face for capturing your knight? | Chess Boxing |
| According to F.M.S., global warming is a consequence of the decrease in the number of what? | Pirates |
| What is the last name of the man behind the real face of the mask best known to netizens? | Fawkes |
| What is the name of the hairiest lieutenant of World War II? | Wojtek |
| Which temple is associated with a god who caused the largest pandemic in the darkness of the afterlife? | Zul’Gurub |
| What is the codename of the multicellular organism that can clone anything that touches its rhytidome? | SCP-038 |
Be attentive with your answers. If your response has multiple words but isn’t accepted, try entering it without spaces. For example, use ChessBoxing instead of Chess Boxing.
How to Unlock the Cosmos Achievement
To earn the Cosmos achievement, you need to answer all six questions posed by Chester in Campaign Mode correctly. After you respond to every query, Chester will invite you to join him.
Ensure you deny entry to all other visitors so you can concentrate on Chester’s questions without the distraction of checking in anyone else.
Use the following list for all six answers.
All Chester Quiz Answers in Campaign Mode
| Question | Correct Answer |
|---|---|
| What is the meaning of life, the universe, and everything? | 42 |
| What is the number of different permutations of the most relevant Mersenne prime in computing? | 302400 |
| How many elements are in the power set of the set of happy palindromic numbers less than 10,000? | 536870912 |
| How many times must you fold a 0.01 mm thick sheet of paper, at minimum, to cover the distance between the Shire and Mordor? | 38 |
| How many unique permutations does the cardinality of the power set of a set with a number of elements equal to the first happy perfect number have? | 45360 |
| How many numbers smaller than the sum of Chester’s ASCII codes are coprime to that sum? | 358 |
Once you’ve correctly answered all six questions, Chester will invite you to join him. Choose Yes to unlock the Cosmos achievement.
