Catherine

Game Cheats:
Alternate Endings:
Unlock the following endings by performing the corresponding tasks in level 9:

ENDING - HOW TO UNLOCK
Bad Cheater's - Answer "Yes" to Question 2, "Yes" to Question 3, and "Chaotic Excitement" to Question 4 and have your Karma meter in the blue.
Bad Lovers' - Answer "Yes" to Question 2, "Yes" to Question 3, and "Peaceful Days" to Question 4 and have your Karma meter in the red.
Good Cheater's - Answer "Yes" to Question 2, "Yes" to Question 3, and "Chaotic Excitement" to Question 4 and have your Karma meter in the red.
Good Freedom - Answer "No" to Question 2, "No" to Question 3, and "Yes" to Question 4 and have your Karma meter in either the red or blue.
Good Lovers' - Answer "Yes" to Question 2, "Yes" to Question 3, and "I'm Ready" to Question 4 and have your Karma meter in the blue.
True Cheater's - Answer "No" to Question 2, "Yes" to Question 3, and "Yes" to Question 4 and have your Karma meter in the red.
True Freedom - Answer "No" to Question 2, "No" to Question 3, and "Yes" to Question 4 and have your Karma meter neutral.
True Lovers' - Answer "Yes" to Question 2, "No" to Question 3, and "I'm Ready" to Question 4 and have your Karma meter in the blue.

New Rapunzel levels:
To unlock new Rapunzel levels, press UP, DOWN(2), UP(3), DOWN(4), RIGHT at the Rapunzel arcade games title screen. Enter the code a second time to disable its effect.

Booze speed boost:
In the bar before each puzzle sequence, make sure you drink three drinks as each one increases your speed in puzzles. A maximum speed can be achieved with three drinks.

Colosseum Mode:
Complete the game to unlock Colosseum mode.

Easy mode:
On the title screen, hold the back button until you hear a chime to activate easy mode.

Unlockable Babel Mode Levels:
Unlock the following levels in Babel Mode by earning the corresponding number of Gold Prizes from the Golden Playhouse under the Normal or higher difficulty setting:

LEVEL - GOLD PRIZES
Altar - One Gold Prize.
Axismundi - Nine Gold Prizes.
Menhir - Three Gold Prizes.
Obelisk - Five Gold Prizes.

Avoiding boss attacks:
Every boss in the game has a special move or two that can become a serious problem. Just before they use these moves (listen for audio cues), press the UNDO button to cancel the attack, or at least, delay it a bit. This makes boss fights much easier.

Unlimited Rapunzel games:
When you first get control of Vincent at the bar, go to your phone and save. Then, head over to Rapunzel and play your 3 credits. The game saves after each level you complete, but it is only saving your progress in the Rapunzel game and not in your main game save. Therefore, simply exit out to the Main Menu without saving after you leave the Rapunzel game and then reload to find yourself back where you left off at the Stray Sheep. You will still have your 3 credits for Rapunzel and be able to start at the next level in the game you last left off at.

Shin Megami Tensei: Persona series easter eggs:
-In the Stray Sheep, on the counter to the left of where Erica usually stands, you can find a doll of Teddie from Persona 4.
-Near Erica is a Gekkoukan emblem (Persona 3) on the wall.
-Vincent's bookshelf above his bed has a book titled Persona.

Stage skip in New Game +:
Get a Gold on a stage to unlock the option of skipping it on a second playthrough. This allows you to focus on story things and see the multiple endings.

Text replies hint:
Usually there are about three variations in the way Vincent responds to his texts. The difference is most notable in the response's tone. The gamut of Vincent's feelings can go from indifference to abrasive to considerate, all depending on how you want to convey his emotions. To view your answer options, press erase and then press enter. When you are satisfied with the first sentence, you can do the same with the second and the third. This allows you to tailor unique combination of responses that will give you either good or bad adjustments to the morality meter. So, play around with your texting options for a while and figure out how you want to be perceived before you hit the Send button.

Secret photos hints:
-Throughout the game you will receive photos (usually from Catherine).There are certain photos that can only be obtained through specific actions or based on your karma. The earliest instance of this is Day 2 at the "Stray Sheep" when you receive a text from an unknown number(Catherine). Telling her that it's you will give you a picture of her lips.
-Have pink Karma on Day 3 and Catherine will send you a picture of her in a towel.
-On Day 6 or 5, Catherine will send you picture to make you feel better. It will be one of two things: Her in red leather and a whip or her in a nurse outfit. You get this one regardless and can change which one it is by going back to the text and hitting TRIANGLE (picture button)
-On the last night at the stray sheep you will get a text from your wireless provider saying that their was recently a problem with their phone (missing pictures). Attached to that text is a picture of Katherine either of her next to a birthday cake or her in the bathtub.You can see both of these regardless, but if you have Pink karma you will get a bonus picture.

Getting all eight endings hints:
-Karma is affected by the choices you make during the "confession" segments in the game, by replying to text messages on your phone, and even dialogue choices. There are three possible main routes with different variations of good and bad endings for each, which are achieved by being nice to either Catherine (Pink Side) or Katherine (Blue Side), or being mean to both (keeping your Karma meter in the middle).
-The ending variations are actually affected by the Confession questions in the final stage (9th Night).
-The last couple questions and your standing on the Karma meter up to that point determine the ending.
-During the 9th Night, the first question actually doesn't affect your ending, but the following two determine your fourth question and ending. Here's how to get all the different variations:

Katherine (True) Ending
Meter Position - Extreme Blue
Question 1 - Yes
Question 2 - No
Question 3 - I'm Ready
Catherine (True) Ending
Meter Position - Extreme Pink
Question 1 - No
Question 2 - Yes
Question 3 - Yes
Freedom (True) Ending
Meter Position - Middle
Question 1 - No
Question 2 - No
Question 3 - Yes
Katherine (Good) Ending
Meter Position - Extreme Blue
Question 1 - Yes
Question 2 - Yes
Question 3 - I'm Ready
Catherine (Good) Ending
Meter Position - Extreme Pink
Question 1 - Yes
Question 2 - Yes
Question 3 - Chaotic Excitement
Freedom (Good) Ending
Meter Position - Extreme Either
Question 1 - No
Question 2 - No
Question 3 - Yes
Katherine (Bad) Ending
Meter Position - Extreme Pink
Question 1 - Yes
Question 2 - Yes
Question 3 - Peaceful Days
Catherine (Bad) Ending
Meter Position - Extreme Blue
Question 1 - Yes
Question 2 - Yes
Question 3 - Chaotic Excitement

Achievements:

The Nightmares Have Just Begun.
Reward: 5 Points
Objective: Conquer Stage 1.

Dreams Come True
Reward: 100 Points
Objective: View all of the endings.

Read All About It!
Reward: 10 Points
Objective: Get Justin out of his jam.

A New Look
Reward: 10 Points
Objective: Help Todd out of his trouble.

Mother Inferior
Reward: 10 Points
Objective: Help Archie work through his quandary.

Love is Patient, Love is Kind
Reward: 10 Points
Objective: Resolve Daniel's dilemma.

One Last Case
Reward: 10 Points
Objective: Help Morgan clean up his mess.

Everyday Hero 5
Reward: 0 Points
Objective: Help everyone out of their predicaments.

Play It Again, Vince...
Reward: 5 Points
Objective: Use the jukebox to change the music.

Text Junkie
Reward: 20 Points
Objective: Reply to at least 20 text messages by the end of the final day.

Welcome to the Colosseum
Reward: 10 Points
Objective: Unlock the Colosseum mode.

Push It to the Limit!
Reward: 10 Points
Objective: Push 5 blocks at once. (Golden Playhouse)

Have an Ice Day
Reward: 10 Points
Objective: Slide an Ice Block 5 or more blocks. (Golden Playhouse)

Bomberlamb
Reward: 20 Points
Objective: Hit 15 blocks with a single explosion. (Golden Playhouse)

I Can Fly!
Reward: 30 Points
Objective: Jump on a Spring Block 3 times in a row. (Golden Playhouse)

Take Your Time
Reward: 30 Points
Objective: Move a Dark Block 10 times in a row. (Golden Playhouse)

Sake Sensei
Reward: 10 Points
Objective: Listen to all the sake sound bites.

Beer Baron
Reward: 10 Points
Objective: Listen to all the beer factoids.

Cocktail Connoisseur
Reward: 10 Points
Objective: Listen to all the cocktail trivia.

Whisky Wiseman
Reward: 10 Points
Objective: Listen to all the whisky minutiae.

You Don't Have To Go Home...
Reward: 5 Points
Objective: Stay in the bar until all the other customers leave.

Babel's Calling
Reward: 10 Points
Objective: Unlock the Altar by earning 1 Gold Prize on Normal or Hard.

Altar Conquered!
Reward: 10 Points
Objective: Complete Stage 1 of Babel.

3-Star Man
Reward: 15 Points
Objective: Unlock Menhir by earning 3 Gold Prizes on Normal or Hard.

Menhir Conquered!
Reward: 15 Points
Objective: Complete Stage 2 of Babel.

5-Star Man
Reward: 20 Points
Objective: Unlock the Obelisk by earning 5 Gold Prizes on Normal or Hard.

Obelisk Conquered!
Reward: 20 Points
Objective: Complete Stage 3 of Babel.

Past a Heap of Puzzles
Reward: 10 Points
Objective: Beat Stage 64 of Rapunzel.

Cheers To You!
Reward: 10 Points
Objective: Unlock all other Achievements!