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