Here is the full list of all 10 Hentai Crush achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Make Miko get high
Make Suyi get high
Make all 5 girls get high in 50 days
Make Yufei get high
Make Emica get high
Give any girl a gift 15 times
Successfully ask girl on date for 15 times
Make Sera get high
Make Hitomi get high
Make Yukino get high