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