Dragon Ball reference...
	Hidden Phone Numbers...
	Various Trophies...

Look at the billiard ball poster, and Alice will say "These look like they're from that show where these kids collect seven balls that can grant a wish".

The phone in room 04 of the Crew Quarters has a few hidden phone numbers you can call to hear special messages. The first two sets of numbers can be found in the secret archive entitled Phone.

Effect	Password
Erotic hotline	6969
Have a conversation with Jenny	5309
Origin of "Pie"	3141
Set of numbers that can be read upside down	8008

Complete the following tasks to unlock Vita trophy rewards.

Trophy	How to unlock
A Certain Point of View (Gold)	Caught a glimpse of another time.
A Consumate Collection (Gold)	Found ALL the files!
An Eidetic Experience (Bronze)	Found a file.
An Equal and Opposite Reaction (Silver)	Saw Quark's ending.
Arms Race (Silver)	Saw Sigma's ending.
Bachelor of Escapology (Bronze)	Escaped from the elevator.
Behind Blue Eyes (Silver)	Saw Dio's ending.
Best Served Cold (Silver)	Saw Alice's ending.
Classified (Bronze)	Found a secret.
Doctor of Escapology (Silver)	Escaped from sixteen rooms.
Escapest (Gold)	Escaped everything on Hard difficulty.
Escapey (Bronze)	Escaped on Hard difficulty.
Every Ending Begins Somewhere (Bronze)	Saw any of the endings.
Fire and Ice (Gold)	Saw the end. Or maybe the beginning?
Gotta Hand It To You (Bronze)	Opened the third lock.
He Was Convicted of a String of Numbers (Bronze)	Opened the fifth lock.
I Can't Believe It's Not Murder! (Bronze)	Opened the second lock.
If I Told You You Had A Nice Antibody… (Bronze)	Opened the fourth lock.
In Root Beer Veritas (Silver)	Saw Tenmyouji's ending.
Master of Escapology (Bronze)	Escaped from eight rooms.
No Lying Down On the Job (Bronze)	Opened the sixth lock.
Redacted (Gold)	Found ALL the secrets!
Secret Agent Woman (Silver)	Saw Clover's ending.
Some Days You Just Can't Get Rid of a Bomb (Bronze)	Opened the tenth lock.
Tears in the Rain (Silver)	Saw Luna's ending.
That Wasn't Supposed to Happen (Bronze)	Saw any of the bad endings.
Through the Looking Glass (Silver)	Saw K's ending.
Time After Time (Silver)	Saw Phi's ending.
To Each According to His Needle (Bronze)	Opened the first lock.
Virtue's Last Reward (Platinum)	Acquired all trophies.
Who Set Up Us The Bomb, Part 1 (Bronze)	Opened the seventh lock.
Who Set Up Us The Bomb, Part A (Bronze)	Opened the ninth lock.
Why'd You Do That, You Dumas! (Bronze)	Opened the eighth lock.