Here is the full list of all 25 Arboria achievements.
Reach Father Tree Level 10
Slay Jormund and fulfill your destiny
Unlock all the NPCs in the Village
Destroy Dummy
Slay Gobbok
Die for the tenth time
Slay Repta King
Reach Top 1 Rank on Graveyard with Yotun that has a Negative Trait
Complete 5 Symbiont Blueprints
During one run equip 5 different Symbiont Archetypes
Fill your whole inventory with Veri
Find a legendary weapon
Defeat your first Mini-Boss
During one run use at least 30 Usable Items (Traps, Grenedes etc.)
Defeat 100 enemies in a single run
Complete your first Blueprint
Complete 3 root events in a single run
Die for the first time
Purchase your first upgrade
Enchant or Craft any Equipment using Essence
Die without collecting any Veri
Complete one level of Durnar without Healing Bongo in Inventory
Slay all Bugz Queen Sisters
Complete New Game+
Complete New Game++