Here is the full list of all 31 Dream Date achievements.
Skilled Rina
Have all of Rina
Unlocked Rina's CG
Super size idol
Active Rina
Is Rina on purpose？
Rina is jealous
Reward after cleaning?
Feeding of Rina
Dispel the uneasiness of Kashima
What kind of uniform？
Win the favor of Kashima
Find the kitten again
It's a real kiss
Have all of Kashima
First touch
Find the kitten
Unlocked Kashima's CG
Sensitive idol
Unlocked Yurui's CG
Have all of Yurui
Outdoor hot spring with mixed bath
The idol of hard work
Be strongly kissing
The idol is sick
This soda is all over the place!
dol is the king of the stomach!
Welcom to Dream World