Here is the full list of all 35 Koi-Koi Japan Hanafuda playing cards achievements.
[Multiplayer]Win 10 times.
[Multiplayer]Earn 20 points or more with 1 Stop.
[Multiplayer]Defeat opponent for the first time.
[Multiplayer]Quit Tutorial Mode.
Earn 20 points or more with 1 Stop.
Complete "Light Five" Yaku.
Win 100 times.
Defeat opponents from all areas in Collection Mode.
Get 10 successive wins.
Complete "Light Four" Yaku.
Complete "Boar, Deer, Butterfly" Yaku 5 times.
Win 10 times.
Complete "Light Three" Yaku 10 times.
Form 5 Yaku or more in 1 round.
Complete "Boar, Deer, Butterfly" Yaku.
Complete "Rain Light Four" Yaku.
Earn 10 points or more with 1 Stop.
Get 5 successive wins.
Complete "Blue Ribbon" Yaku.
Defeat opponent for the first time.
Complete "Red Ribbon" Yaku.
Complete "Light Three" Yaku.
Quit Tutorial Mode.
Call Stop after your opponent calls Koi Koi.
Complete "Moon and Cup" Yaku.
Complete "Cherry Blossom and Cup" Yaku.
Form 3 Yaku or more in 1 round.
Call Koi Koi, form a new Yaku, and call Stop.
Win 500 times.
Complete "Red and Blue Ribbons" Yaku.
Complete "Light Four" Yaku 10 times.
Complete "Light Five" Yaku 10 times.
Complete all Yaku.
Collect each variety of postcard.
[Multiplayer]Win 100 times.