Here is the full list of all 24 Beast Quest achievements.
Complete all other achievements.
Complete the game in Beast Master difficulty mode.
Hunt all of the Shadow Marks.
Get 50 Multi-KO bonuses in combat.
Unlock all upgrades in the Skill Tree.
Collect all of the items that Ekalb needs to prove his magic.
Get 50 Perfect Dodge bonuses in combat.
Defeat 500 enemies in total.
Help Zoltan the Pet Rock to see the sights.
Call on each of the Allies in battle.
Free the four Beasts of Avantia.
Help the Beastologist to find her masterpieces.
Complete all of the side-quests in Avantia.
Free Arcta the Mountain Giant from Malvel's curse.
Hunt one of Avantia's Shadow Marks.
Get 50 Flawless bonuses in combat.
Free Nanook the Snow Monster from Malvel's curse.
Unlock 10 Gold Chests.
Free Ferno the Fire Dragon from Malvel's curse.
Help the Baker to make a batch of Sword Cookies.
Unlock 10 Iron Chests.
Unlock 10 Bronze Chests.
Meet Silver and have him join your Beast Quest.
Meet Elenna and have her join your Beast Quest.