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