Obtain all other trophies.

Make it through the tunnel.

Complete all three stealth sections without being detected.

Reach the base of Elysium Tower and begin the climb.

Take three photos of Yui.

Encounter a mysterious figure for the first time.

Reach Deck 1.

Repel the Rokurokubi with the flare gun.

Reach Deck 2.

Complete the retro section.

Reach the top of Elysium Tower.

Collect all fragments carried by the Elysium Spiders.

Unlock the secret door and listen to the hidden recording.

Unlock the negative ending.

Unlock the positive ending.