Here is the full list of all 50 Catherine Classic achievements.
Conquer Stage 1.
Push 5 blocks at once. (Golden Playhouse)
Conquer Stage 2.
Conquer Stage 3.
Conquer Stage 4.
Conquer Stage 5.
Conquer Stage 6.
Conquer Stage 7.
Conquer Stage 8.
Conquer Stage 9.
View the bad Lover ending.
View the bad Cheater ending.
View the normal Lover ending.
View the normal Cheater ending.
View the true Lover ending.
View the true Cheater ending.
View the normal Freedom ending.
View the true Freedom ending.
View all of the endings.
Get Justin out of his jam.
Help Todd out of his trouble.
Help Archie work through his quandary.
Resolve Daniel's dilemma.
Help Morgan clean up his mess.
Help everyone out of their predicaments.
Use the jukebox to change the music.
Reply to at least 20 text messages by the end of the final day.
Unlock the Colosseum mode.
Slide an Ice Block 5 or more blocks. (Golden Playhouse)
Hit 15 blocks with a single explosion. (Golden Playhouse)
Jump on a Spring Block 3 times in a row. (Golden Playhouse)
Move a Dark Block 10 times in a row. (Golden Playhouse)
Listen to all the sake sound bites.
Listen to all the beer factoids.
Listen to all the cocktail trivia.
Listen to all the whisky minutiae.
Stay in the bar until all the other customers leave.
Unlock the Altar by earning 1 Gold Prize on Normal or Hard.
Complete Stage 1 of Babel.
Unlock Menhir by earning 3 Gold Prizes on Normal or Hard.
Complete Stage 2 of Babel.
Unlock the Obelisk by earning 5 Gold Prizes on Normal or Hard.
Complete Stage 3 of Babel.
Unlock Axis Mundi by earning all Gold Prizes on Normal or Hard.
Conquer the final stage of Babel.
Earn Gold Prizes on all Hard difficulty stages.
Beat Stage 64 of Rapunzel.
Uncover the truth behind Rapunzel.
Hear Rapunzel's sad song.
Unlock all other Achievements!