Quick Answer
Facing the four hanging masks above the cage, number them from left to right. Shoot them with the Oni Bow in this order: 3 → 4 → 1 → 2. Take the Unsettling Mask from the opened cage, then return to the earlier locked door near the Underground Level Three Spirit Mirror and use it as the key.
- Mask order
- 3 → 4 → 1 → 2
- Tool
- Oni Bow
- Reward
- Unsettling Mask
- Mission
- What Lurks in the Shadows
Shoot the hanging masks in order
| Shot | Target, counted from your left |
|---|---|
| 1 | Third mask |
| 2 | Fourth mask |
| 3 | First mask |
| 4 | Second mask |
How the room explains the answer
The matching masks near the opposite wall provide the clue. Walk around to the other side of their screens and examine the light passing through them. Each produces a different number of illuminated openings.
Match one opening to the first shot, two to the second, and so on. These counts refer to the corresponding hanging masks above the cage. Always count positions while facing that cage so left and right stay consistent.
Take the key back to the locked door
When the sequence is accepted, the cage opens. Collect the Unsettling Mask before leaving the room, return toward the Underground Level Three Spirit Mirror and place it in the earlier door’s mechanism.
If the cage stays shut, check that you shot the hanging masks in the cage room and counted from the correct side. Let a wrong sequence reset, then enter all four shots again.
Red threads and Oni Refuge blocks
Red threads are a different obstacle: use Oni Vision to trace them to a Thread Genma, then kill it. The creature sustains the obstruction, so attacking the sealed gate alone is ineffective.
In the Oni Refuge, use the Oni Bow on the circular targets of moving blocks. Inspect from another platform if you cannot see the required target. These obstacles use the bow and Oni abilities, rather than the Laboratory’s mask sequence.
Direct answers
Frequently asked questions
What is the mask puzzle order?
3, 4, 1, 2, with the hanging masks numbered left to right while facing the cage.
What do I do with the Unsettling Mask?
Use it on the locked door near the Underground Level Three Spirit Mirror.
Does shooting the wrong mask ruin the puzzle?
No. The sequence resets, allowing another attempt.
