Here is the full list of all 21 Ys II Chronicles+ achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Complete Ys II Time Attack.
Master every achievement in Ys II.
Complete Ys II on Nightmare difficulty.
Complete Ys II on any difficulty.
Unlock all details for all non-boss bestiary entries.
Sleep in three women's beds.
Oh God make them go away!
Max out your money.
Make all the animals in Ramia Village absolutely adore you.
Slaughter ten generations of gatekeeper.
Ensure that Maria is not amused.
Completely fill the character notebook.
Receive and eat four unique homemade food items.
Find and speak with Aldow.
"Measure" Tarf.
Raise Tarf to max level.
Scatter apples violently across the floor, most likely bruising them horribly.
Eliminate all the monsters in Gila's basement.
Receive a free Short Sword.
Burn 50 villagers.
Receive money from a duck.