Here is the full list of all 57 勾八麻将(J8 Mahjong) achievements.
Conquered The Gravida.
Conquered The Martial Artist.
Conquered The Policewoman.
Conquered The Bad Girl.
Conquered The Schoolgirl.
Conquered The Elder Cousin.
Conquered The CEO.
Conquered The Goddess Of The Galaxy.
Completed Yaku [Chankan]
Completed Yaku [Rinshan kaihou]
Completed Yaku [Haitei raoyue]
Completed Yaku [Houtei raoyui]
Completed Yaku [Ippatsu]
Completed Yaku [Ancient Yaku: Tsubame gaeshi]
Completed Yaku [Ancient Yaku: Kanburi]
Completed Yaku [Ancient Yaku: Shiiaru raotai]
Completed Yaku [Double riichi]
Completed Yaku [Sanshoku doukou]
Completed Yaku [Sankantsu]
Completed Yaku [Toitoi]
Completed Yaku [Sanankou]
Completed Yaku [Shousangen]
Completed Yaku [Honroutou]
Completed Yaku [Chiitoitsu]
Completed Yaku [Chantaiyao]
Completed Yaku [Ittsu]
Completed Yaku [Sanshoku doujun]
Completed Yaku [Ancient Yaku: Uumensai]
Completed Yaku [Ancient Yaku: Sanrenkou]
Completed Yaku [Ryanpeikou]
Completed Yaku [Junchan taiyao]
Completed Yaku [Honitsu]
Completed Yaku [Ancient Yaku: Isshoku sanjun]
Completed Yaku [Chinitsu]
Completed Yaku [Ancient Yaku: Iipin mouyue]
Completed Yaku [Ancient Yaku: Chuupin raoyui]
Completed Yakuman [Tenhou]
Completed Yakuman [Chiihou]
Completed Yakuman [Daisangen]
Completed Yakuman [Suuankou]
Completed Yakuman [Tsuuiisou]
Completed Yakuman [Ryuuiisou]
Completed Yakuman [Chinroutou]
Completed Yakuman [Kokushi musou]
Completed Yakuman [Shousuushii]
Completed Yakuman [Suukantsu]
Completed Yakuman [Chuuren poutou]
Completed Yakuman [Ancient Yaku: Renhou]
Completed Yakuman [Ancient Yaku: Daisharin]
Completed Yakuman [Ancient Yaku: Daichikurin]
Completed Yakuman [Ancient Yaku: Daisuurin]
Completed Yakuman [Ancient Yaku: Ishino uenimo sannen]
Completed Double Yakuman [Suuankou tanki]
Completed Double Yakuman [Kokushi musou jyuusan men machi]
Completed Double Yakuman [Junsei chuuren poutou]
Completed Double Yakuman [Daisuushii]
Completed Double Yakuman [Ancient Yaku: Daichisei]