Here is the full list of all 26 My Beastly Lovers achievements.
Reach the highest love level with Bobo.
Reach the highest love level with Catherine.
Reach the highest love level with Fenris.
Reach the highest love level with Gru.
Reach the highest love level with Therion.
Reach the highest love level with Yola.
Give a gift to any lover.
Give an ultimate gift to any lover.
Answer correctly to any question.
Finish any quest.
Finish ten quests in total.
Make any lover hate you.
Make four lovers hate you during one playthrough.
Visit every location.
Examine everything possible.
Kill any creature.
Aaaaaughibbrgubugbugrguburgle! (Try talking to the farmer)
Pick up total of 50 items.
Gain 500 gold coins.
Listen to all of Pope's tips.
Get all healed up by Pope.
Give three objects of love to Pope and begin the portal ritual.
Choose to return back to your own world.
Choose to stay in Ferrus forever.
Find Pope and talk to him.
Listen to all the rumors.