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