Note: This game is also titled Siren.
Time attack mode:
Successfully complete the first two objectives on all
levels in every scenario (78 blocks filled on link navigator)
to unlock the first ending sequence. Then, press Square
at the scenario selection screen.


Brain Cell Revival (Zuno) puzzle mini-game:

During Tamon Takeuchi's Day 3 03:00 level, a Brain
Cell Revival mini-game can be found in a child's grave when you
switch over to Kyoya Suda. Successfully complete the level then
save the game. An option to play a new puzzle game will now appear
at the main menu.

Hidden FMV sequence:
Successfully complete the game after finding all 100
Archives. A bonus FMV sequence will be unlocked at the top right
corner of the scenario selection screen.

Mission Objectives 2:
To unlock Mission Objectives 2 for every character
and/or scenario, complete 19 stages in any order. Then, press
L1 + R1 while the stage is highlighted at the scenario
selection screen. Note: You will automatically obtain it after
completing the random 19 stages.



Hint: Break strangleholds:
If you get too close to a regular Shibito, it will
sometimes prefer to grab you by the neck and choke you to death
instead of doing a regular attack. When one takes you into a stranglehold,
rapidly move the Left Analog-stick Up and Down.
This will break the hold, and prevent you from dying.