Catherine Cheats

Bomberlamb (Bronze): Hit 15 blocks with a single explosion (Golden Playhouse)
Cheers To You! (Platinum): Unlock all other Trophies!
Cocktail Connoisseur (Bronze): Listen to all the cocktail trivia
Crossing the Courtyard (Bronze): Conquer Stage 5
Dreams Come True (Gold): View all of the endings
Everyday Hero (Silver): Help everyone out of their predicaments
Have an Ice Day (Bronze): Slide an Ice Block 5 or more blocks (Golden Playhouse)
Hit the Road, Vincent (Bronze): View the bad Cheater ending
I Can Fly! (Silver): Jump on a Spring Block 3 times in a row (Golden Playhouse)
Just Like Old Times (Bronze): View the normal Lover ending
Legendary Prince (Silver): Hear Rapunzel’s sad song
Let My Sheep Go (Bronze): Conquer Stage 3
Lord of the Night (Bronze): View the true Cheater ending
Love is Patient, Love is Kind (Bronze): Resolve Daniel’s dilemma
Making Legends (Bronze): Conquer Stage 8
Menhir Conquered! (Bronze): Complete Stage 2 of Babel
Mother Inferior (Bronze): Help Archie work through his quandary
Nighty Night (Bronze): View the bad Lover ending
No One Expects the… (Bronze): Conquer Stage 4
Obelisk Conquered! (Bronze): Complete Stage 3 of Babel
One Last Case (Bronze): Help Morgan clean up his mess
Past a Heap of Puzzles (Bronze): Beat Stage 64 of Rapunzel
Path to the Altar (Bronze): Conquer Stage 7
Play It Again, Vince… (Bronze): Use the jukebox to change the music
Push It to the Limit! (Bronze): Push 5 blocks at once (Golden Playhouse)
Read All About It! (Bronze): Get Justin out of his jam
Sake Sensei (Bronze): Listen to all the sake sound bites
Sleepless Nights (Bronze): View the normal Cheater ending
Starting a New Life (Bronze): View the true Lover ending
Take Your Time (Silver): Move a Dark Block 10 times in a row (Golden Playhouse)
Taking on the Gods (Silver): Unlock Axis Mundi by earning all Gold Prizes on Normal or Hard
Text Junkie (Bronze): Reply to at least 20 text messages by the end of the final day
The Golden Child (Gold): Earn Gold Prizes on all Hard difficulty stages
The Great Escape (Bronze): Conquer Stage 2
The Nightmares Have Just Begun (Bronze): Conquer Stage 1
True Freedom! (Silver): Conquer Stage 9
Welcome to the Colosseum (Bronze): Unlock the Colosseum mode
What Time is It? (Bronze): Conquer Stage 6
Whatever, Buddy (Bronze): View the normal Freedom ending
Whisky Wiseman (Bronze): Listen to all the whisky minutiae
You Don’t Have To Go Home… (Bronze): Stay in the bar until all the other customers leave

Very Easy Mode
On the difficulty selection screen hold select on easy until you hear a chime. This unlocks the game's hidden Very Extra mode putting the puzzles at the easiest game difficulty.

Babel Mode Stages
The Babel Mode lets you take on randomized stages either by yourself or with a friend. You can only unlock these stages by earn Gold Prizes in the Golden Playhouse.

Altar: Earn one Gold Prize from the Golden Playhouse on Normal difficulty or higher.
Axismundi: Earn nine Gold Prizes from the Golden Playhouse on Normal difficulty or higher.
Menhir: Earn three Gold Prizes from the Golden Playhouse on Normal difficulty or higher.
Obelisk: Earn five Gold Prizes from the Golden Playhouse on Normal difficulty or higher.

Stage Skip
Clear all the stages in a chapter with a gold trophy on each stage (consecutively) to get a gold trophy for the chapter. Now, if you replay the chapter, you can press start and skip any of the stages in the chapter, including the boss. This is particularly useful when going for all the endings, especially for the last chapter. Stage skip for a chapter can only be unlocked by getting the gold trophy on Normal difficulty or above. To get a gold trophy on a stage, you generally need to get all the gold coins and have a full step combo from the start of the stage to the end. Step combos don't continue if you die and restart at a checkpoint, so if you are going for a gold trophy and you die, then you need to restart at the beginning of the stage.

Unlimited Step Combo
When trying to beat whole levels in one step combo, you might find it hard to keep a consistent combo. So when you combo bar is almost fully drained, pressing undo will reset the whole bar giving you a better chance at beating the level in one combo!