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