Here is the full list of all 10 Yu Crossing Animals achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Sleep for the first time in your new home.
Complete all Marionette's requests.
Complete all Mona's interactions.
Get close to the town's succubus.
Have the pool "eggsperience".
Find all sketches scattered across the town.
Earn 10.000 gold.
Pick money from the lost wallet.
Have your speed increased by using a specific item.
Complete all interactions.