Here is the full list of all 34 SteamWorld Dig 2 achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Finish the game with a gold star in every category.
Finish the game with a gold star in the Deaths category. You can’t even die once, buddy!
Finish the game with a gold star in the Time category. How fast is that, exactly? It’s up to you to find out!
Finish the game with a gold star in the Secrets category.
Survive the Ultimate Trial.
Buy all upgrades available at the workbench.
Collect 15 resources with your Hook Shot.
Finish the game with a gold star in the Wealth category. Get filthy rich!
Leave the Earth with your companion in tow.
Collect 42 artifacts.
Escape the grasp of Vectron.
Do not trigger the alarm in Vectron more than twice.
Upgrade your armor to the highest level possible.
Destroy all devices without entering Vectron.
Upgrade your lamp to the highest level possible.
Upgrade your backpack to the highest level possible.
Reach experience level 14.
Sell $10,000 worth of resources.
Upgrade your pickaxe to the highest level possible.
Collect 25 artifacts.
Travel a distance of 100 tiles horizontally without touching the controls.
Find all missing Yonker brothers.
Kill an enemy with its own projectile.
Complete 20 challenge caves.
Kill two enemies with one crushing rock.
Defeat the Great Prophet.
Sell $2,500 worth of resources.
Collect 10 Silver ore resources.
Hit 15 flyers with your Hook Shot.
Discover the last refuge of a fallen civilization, The Oasis.
Collect 10 artifacts.
Enter Yarrow and discover a strangely verdant area.
Complete 5 caves.
Defeat the first boss.