Here is the full list of all 29 The Wild at Heart achievements.
Defeat The Never.
Find all the Lost Journal Pages missing from "Book".
Take a moment of thoughtful meditation by the waterfall in Heartlands.
Purchase all health upgrades.
Complete every beastie bounty from Toothpicks.
Completely fill out the Grove Trove, finding every last missing treasure.
Purchase every Bag Slot upgrade.
Safely return all of Litterbox's cats to the Grove.
Open the way to Umbral Lethea, using the power of the Greenshield Artifacts.
Learn about every area of the Deep Woods from Toothpicks.
Purchase every Gustbuster upgrade.
Break a crystal with Barblings without throwing them.
Purchase every Warden's Way upgrade.
Fully reveal the maps for every known area of the Deep Woods.
Befriend the 5 main Spriteling types.
Purchase every Spriteling Cap upgrade.
Listen to all the juicy gossip that the Twins have to dish.
Get 5 or more Spritelings frozen in ice simultaneously.
Hear all of Scrap Heap's tips and tricks.
Make a trade with Rubbish.
Recall all wayward Greenshields to The Grove, uncovering the details of their missions.
Craft every type of Meal.
Craft every type of Tonic.
Stay up through the night until daybreak, outside of The Grove.
Build your first camp.
Kick an item directly into the Stash Box.
Reach The Grove, the home of the Greenshields.
Craft your first item.
Successfully run away from home.