Here is the full list of all 14 Sakura Succubus 4 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
and don't blink
Shared togetherness
Not a gentleman, eh?
The smallest of fireworks
Mind to play volleyball with succubi?
Just a little inconvenience
Can you calm Marina down?
The punishment was close
Do you regret the jog, yet?
Listen to Hazel's ghost story
Teach Cosmos how to swim
Call Hifumi 'big sister'
Let Ayu interfere
Begin your vacation