Here is the full list of all 21 Yumori Forest achievements.
buy everything in the shop
finish hard mode
defeat 1000 enemies
finish normal mode without leveling up
buy all potion upgrades
finish normal mode
defeat domokai
defeat ciar
collect a total of 1000 buries
deafeat tetsu
survive with less than 20 hp
complete a round without getting hit
defeat 100 enemies
bow to the merchant
collect a total of 100 buries
kill an enemy with a deflected arrow
reunite with the forest cat
defeat 10 enemies
defeat 3 enemies with 1 attack
defeat 5000 enemies
collect a total of 10000 buries