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
Call Steffy your waifu
Hazel won the Competition
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Hifumi's looking after Hazel
Hifumi pulls Stephania into a hug
Kiss HIfumi
Hear the maid's threat
The Person you've called...
Personal made alarm
Stephania is warming up to you
Kiss Astoria's princess
Watch Hazel workout
Meet up with Ayu and Cosmos