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