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