Here is the full list of all 30 Titty Crush achievements.
Conquer Kiyo.
You met Suzu
You met Dolores.
You met Shiomi.
You met Houki.
You met Kiyo.
Crush two apples.
Crush two bananas.
Crush two coconuts.
Crush two melons.
Crush two cherries.
Crush two peaches.
Play the game for the first time.
Conquer Houki.
Conquer Shiomi.
Conquer Dolores.
Conquer Suzu.
Crush 1000 cherries.
Crush 1000 melons.
Crush 1000 peaches.
Crush 1000 apples.
Crush 1000 bananas.
Reach 69000 points in Kiyos arcade level.
Reach 69000 points in Houki arcade level.
Reach 69000 points in Shiomis arcade level.
Reach 69000 points in Dolores arcade level.
Reach 69000 points in Suzus arcade level.
Speedrun the game in under 1 hour.