Here is the full list of all 90 Aground achievements.
The base game contains 86 achievements, and there is 1 DLC pack containing 4 achievements.
Research the Alien Locator.
Defeat the Hail Storm.
Evolve a Dragon Ship.
Forge an Evolution Gem.
Obtain Full Cyborg Gear.
Build a Jet.
Build a Jeep.
Craft your first Spellbook.
Catch an Electric Eel.
Capture a spirit of every element.
Activate the Vine Copse.
Defeat the Golemech.
Build any type of Worker Bot.
Defeat the Old One.
Defeat the Wyrm Queen.
Repair the Fighter Escort ship.
Build the Com Station.
Defeat the Kraken.
Upgrade your Hut.
Collect a Pearl.
Activate the Time Manipulator.
Successfully Confront the Mirrows.
Read all the Logs.
Build a Submarine.
Chop down a Purple Tree.
Activate the Forge.
Activate the Synthesizer.
Fly on a Dragon.
Discover a Life Pod.
Defeat a Diode Wolf.
Defeat the Pirates.
Complete the Minotaur Maze.
Build the Elevator.
Upgrade your character with 500 or more Skill Points.
Solve the Bandit problem.
Build the Factory.
Build the Power Plant.
Hatch a Dragon from a Cocoon.
Build the Wyrm Pen.
Now what do I do with it?
Build a Boat.
Cook a Pizza.
Mine a Diamond.
Defeat a Golem.
Build the Dock.
Add a Pen to the Farm.
Buy a Super Pack.
Build the Market.
Build a structure with a Blueprint.
Build the Workshop.
Build the Laboratory.
Defeat a Wyrm.
Get the Backpack.
Add an Orchard to the Farm.
Build the Kitchen.
Build the Farm.
Build the Smelter.
Build the Storehouse.
Defeat a Boar.
Build the Hut.
Enchant a Chainsaw.
Obtain a full set of dragon equipment.
Obtain a full set of witch equipment.
Build your first Space Station.
Defeat a Dragomech.
Install a full set of upgraded Cyborg gear.
Defeat an Enemy Cruiser.
Complete the Museum.
Craft every Spellbook in game.
Evolve a Mecha Dragon.