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