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