Ch.5 · ≈ 3 hours (+1h for True Ending)
Memory Vault — Walkthrough
Final chapter. Run the secret cipher BEFORE engaging Diana Shadow if you want True Ending. Point of no return at the Vault elevator.
Objectives in order
- Buy the Final HP Upgrade BEFORE the elevator.
- Solve Puzzle 5-2 to open the Vault.
- Solve hidden Puzzle 5-7 (the Secret Cipher).
- Defeat Diana Shadow — phase 2 only spawns with Cipher solved.
Tips
- Mirror Hack must resolve in <8s. Practice on phone first.
- Carry over Origin Pendant to NG+ for the Origin Ω secret boss.
Boss fight
The chapter ends with Diana Shadow. Weak point: Hacking inversion (mirror her grid). Drops: Lunafilament ×6, REM Data: "Twin-Echo", True Ending Flag.
Hacking puzzles in this chapter
- Puzzle 5-2 (Hard) — Open the Memory Vault outer ring.
- Puzzle 5-7 (Secret) (Brutal) — Solve the hidden cipher — required for True Ending.