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