How to Reach the Fight
- Navigate through the **northwest corridor** past the slow-moving blue book enemy. Climb the nearby ladder and interact with the blue piano to trigger a bookshelf slide puzzle.
- Solve the puzzle to open the hallway. Proceed right and engage the Guei (ghost enemy) – defeat or spare it. Another slide puzzle with green and pink pianos awaits in the next room.
- After solving, collect **four musical notes** in the following area. Return to the far left hallway to gather four more notes.
- With all eight notes, head to the doorway marked with the Delta Rune. Play the tune to unlock the boss chamber.
Beating Jackenstein
- **Combat Strategy:** Use Act commands to disrupt his relentless attacks. Prioritize healing Kris while directing Susie to break his shield.
- **Mid-Fight Power-Up:** During his charge phase, focus on defense – block or dodge until he overheats. Consult our Jackenstein Guide for detailed tactics.
- **Reward:** Victory grants climbing tools, unlocking vertical exploration in later areas.
FAQ
Q: Where do I get climbing tools in Chapter 4?
Obtain them by defeating Jackenstein after completing the piano puzzles and collecting all eight music notes.
Q: Is Jackenstein optional?
No – defeating him is mandatory to unlock climbing mechanics.
Q: Why can’t I climb anything yet?
Climbing tools are only accessible after defeating the miniboss.
Q: What triggers the fight with Jackenstein?
Collecting all eight notes via piano puzzles and activating the Delta Rune door.
Q: Is the blue piano a music puzzle?
No – it’s a slide puzzle that repositions a bookshelf to progress.