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.
[Multiplayer]Earn 20 points or more with 1 Stop.
[Multiplayer]Defeat opponent for the first time.
[Multiplayer]Quit Tutorial Mode.
Complete "Red and Blue Ribbons" Yaku.
Complete all Yaku.
Quit Tutorial Mode.
Complete "Light Three" Yaku 10 times.
Complete "Boar, Deer, Butterfly" Yaku 5 times.
Win 10 times.
Get 10 successive wins.
Complete "Rain Light Four" Yaku.
Complete "Light Four" Yaku.
Complete "Blue Ribbon" Yaku.
Get 5 successive wins.
Earn 20 points or more with 1 Stop.
Complete "Light Five" Yaku.
Complete "Boar, Deer, Butterfly" Yaku.
Earn 10 points or more with 1 Stop.
Form 5 Yaku or more in 1 round.
Complete "Cherry Blossom and Cup" Yaku.
Call Stop after your opponent calls Koi Koi.
Complete "Light Three" Yaku.
Defeat opponent for the first time.
Complete "Red Ribbon" Yaku.
Complete "Moon and Cup" Yaku.
Call Koi Koi, form a new Yaku, and call Stop.
Form 3 Yaku or more in 1 round.
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.