Vitria is the tentacled boss on the film school's second floor, fought in the room behind the sealed door that the Hexagonal Stone opens. The fight has two phases and a third stage inside the mirror.

Getting to Vitria

  1. Put the developed Photo in the empty frame on the Floor 3 bedside table to get the Hexagonal Stone.
  2. Use the Stone at the sealed door at the top of the film-school staircase.
  3. Save in the room just beyond that door, before you approach the curtains.

The Hexagonal Stone that opens that door comes from the picture puzzle. The fight has two phases and a third stage inside the mirror, and you do not want to lose the run to a reload halfway through.

Phase one: the tentacle strikes

The creature attacks straight ahead, vertically and diagonally.

  1. Step close enough to draw out the vertical strike.
  2. Retreat before it lands.
  3. Hit it with the Pipe during its recovery animation.
  4. Repeat until the encounter moves into the mirror phase.

Save your Revolver ammunition for the short openings that come after. If a tentacle catches Julia by the throat, rapidly press the interact button to break the grip before it drags her in — the grapple drains health and can kill her outright.

The Tenebris Somnia vitria boss: phase two and the mirror

Vitria is protected while the red symbol is visible.

  1. Move around the arena until a tentacle rises that you can only see in the mirror.
  2. Use its reflection to work out where that tentacle is in the real room.
  3. Strike that position until the boss is stunned.
  4. Shoot Vitria during the stun to crack the mirror section above it, and keep firing until a portal opens.

Through the portal

  1. Step into the broken mirror. Julia's movement controls reverse on the other side, so allow space to turn before you approach anything.
  2. Do not walk into the emerging tentacles.
  3. Strike them during the openings until Julia is back in the outer room.
  4. Repeat the reflected-tentacle, stun and portal sequence for the remaining mirror sections.

Later cycles add more tentacles, so keep moving between the attack windows.

After the fight

  1. Speak to Sanguis for the Iron Key and the returned Lapis Fictus Pill.
  2. Unlock the door on the left.
  3. Save in the next room.
  4. Enter the film set to the north — interacting with Iván there begins the ritual that leads into the Desiderium chase. The Desiderium chase and everything after it are in the walkthrough.