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