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