This optional-route guide contains spoilers for the Blue Tower and train unlock.
Route sequence
| Step | Action | Check |
|---|---|---|
| 1 | Collect five red control-panel parts from eligible puzzles. | You have all five red parts. |
| 2 | Install the five parts at Blue Tower and complete the tower interaction. | Obtain the train key. |
| 3 | Take the train key through five key cutters, following the downhill arrows. | Process every cutter in the marked order. |
| 4 | Insert the finished key at the station northwest of Blue Tower. | Use the station mechanism. |
Important boundary
This route does not provide exact coordinates or claim firsthand gameplay capture. Before treating it as a final walkthrough, verify every step in an original gameplay recording.
Evidence status
The sequence is partially verified: one written guide records the full order, while community material only corroborates the Blue Tower and train relationship. The research does not confirm a universal failure cause or a guaranteed train outcome for every group, so keep this page’s partial label visible.