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