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.
Buy all upgrades available at the workbench.
Upgrade your armor to the highest level possible.
Upgrade your backpack to the highest level possible.
Upgrade your pickaxe to the highest level possible.
Leave the Earth with your companion in tow.
Find all missing Yonker brothers.
Collect 15 resources with your Hook Shot.
Collect 42 artifacts.
Upgrade your lamp to the highest level possible.
Sell $10,000 worth of resources.
Reach experience level 14.
Hit 15 flyers with your Hook Shot.
Collect 25 artifacts.
Kill an enemy with its own projectile.
Complete 20 challenge caves.
Escape the grasp of Vectron.
Sell $2,500 worth of resources.
Defeat the Great Prophet.
Travel a distance of 100 tiles horizontally without touching the controls.
Collect 10 Silver ore resources.
Kill two enemies with one crushing rock.
Collect 10 artifacts.
Discover the last refuge of a fallen civilization, The Oasis.
Complete 5 caves.
Enter Yarrow and discover a strangely verdant area.
Defeat the first boss.
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.
Destroy all devices without entering Vectron.
Survive the Ultimate Trial.