Quick Answer
Complete all four ARK quests to power the machine in the final chapter. The required quests belong to Spider, Bat, Hyena, and Lizard. The final chapter also offers Spare or Kill for Dr. Hydnellum.
Best ending: what must you complete before starting the machine?
For the best, or good, ending, finish the ARK quests for Spider, Bat, Hyena, and Lizard before starting the final chapter's machine.
Use the ARK quests guide to track these four tasks. Spider's task includes recovering his shears, helping the yapper, and returning a book.
How do you complete Spider's ARK quest?
Recover Spider's shears from the evidence box and use them to help the yapper in Soggy Ankles.
Take Spider's shears
Retrieve his shears from the evidence box.
Cut down the yapper
Go to Soggy Ankles and use the shears to cut down the hanging yapper.
Collect the big book of friendship
Take the big book of friendship from the yapper.
Give the book to Spider
Deliver the big book of friendship to Spider.
Visit the 13th floor
Take the Cobweb Hotel elevator to the 13th floor.
What should you do before the final chapter's ending choices?
Complete the other three ARK quests so all four are finished before starting the machine.
- Finish the ARK quests for Bat, Hyena, and Lizard alongside Spider's quest.
- Start the machine in the final chapter after completing all four quests.
- Choose Spare or Kill when deciding Dr. Hydnellum's fate in the final chapter.
Use the final chapter walkthrough for the surrounding route. The Neo Junk City endings guide covers ending-related choices.
What should you check if the machine will not start?
Check whether you have completed all four ARK quests: Spider, Bat, Hyena, and Lizard.
For Spider's task, follow the sequence from the evidence box through the Cobweb Hotel elevator. Returning the big book of friendship precedes the trip to the 13th floor.
Reported by other guides, not verified
Players say power below 40 prevents confronting Mother and leaves everyone with a bad ending. One player reported having 35 power at the underground generator.
Players say Buster can find her family in a warm ending. That report gives no requirements and does not identify it as the best ending.
FAQ
All four ARK quests are required to start the final chapter's machine.
Complete the quests for Spider, Bat, Hyena, and Lizard.
Take Spider's shears from the evidence box. Use them on the hanging yapper in Soggy Ankles.
Give the big book of friendship to Spider. Take the Cobweb Hotel elevator to the 13th floor afterward.
Yes. The final chapter offers Spare and Kill as choices for Dr. Hydnellum.