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