when you get to castell de sants you will see a goat, try to pick apples fromthe tree and you will be attacked, try again but this time quicklymove your cursor to the left and hit dodge. now youcan pick up the apples.
now we what want to dois feed the goat in this exact order.
3. marques scribble photo
4. Rich Tea Biscuit
After youhave done this you will need to carry on with thestory until you regain control of nico inside the house. once you do head back outside of the castle and towards to goat and talk to him. achievement should pop :)