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