Here is the full list of all 26 Gedaria achievements.
_testing ach
Enter woods
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Enter cave entrance
Enter lil cave
Enter mine shaft
Start mini-game in forest clearing
Enter Telpenor town
Start DLC
Enter fairytale forest
Enter Telpenor town in DLC
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NEW_ACHIEVEMENT_DESC_1_15
Defeat final boss
Flip the pile of leaves
Fail 3 times to flee during chase
Collect all unique leaves
Collect all geese
Finish base game
Finish DLC
Bring all blueberries back to sad bush
Find all Mustachehead(s)
Finish fairytale forest as goose. While mum is still in or before camp
Ride a bat ¯\_(ツ)_/¯
Read 20 tutorial signs
Secret room in merchant squirrel