Here is the full list of all 12 HENTAI RESORT - there are Dream Paradise achievements.
Play 10 minigames
Get confidence for first time with a waifu
Play a minigame for first time
Start your first conversation
Play 25 minigames
Play 100 minigames
Get confidence with 5 waifus
Get confidence with all the waifus
Take part of 25 conversations
Take part of 100 conversations
Obtain 20 panties
Meet the mysterious guest