Here is the full list of all 20 Hentai Day - there are Ringsel in Troubles achievements.
Check the Credit page to know more about NSFW18Games & Ringsel
Complete one puzzle in Time Mode.
Complete one puzzle in Star Mode.
Start helping Ringsel in her journey!
Complete one puzzle in Diamond Mode
Complete all January activities with Ringsel
Complete all February activities with Ringsel
Complete all March activities with Ringsel
Complete all April activities with Ringsel
Complete all May activities with Ringsel
Complete all June activities with Ringsel
Complete all July activities with Ringsel
Complete all August activities with Ringsel
Complete all September activities with Ringsel
Complete all October activities with Ringsel
Complete all November activities with Ringsel
Complete all December activities with Ringsel
Have $2000 on your bank account (in the game)
Complete all 60 puzzles of the game!
Buy one puzzle directly from main menu.