Here is the full list of all 14 Sakura Succubus 6 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Get suprised at work
Hear the maid's threat
Call Steffy your waifu
The Person you've called...
Kiss HIfumi
Hifumi pulls Stephania into a hug
Hifumi's looking after Hazel
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Hazel won the Competition
Watch Hazel workout
Kiss Astoria's princess
Stephania is warming up to you
Personal made alarm
Meet up with Ayu and Cosmos