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