Here is the full list of all 27 TerraForge achievements.
Earn 100 coins.
Discover iron.
Discover silver.
Craft a masterwork quality item.
Buy your first paid licence.
Buy your first upgrade.
Discover your first relic.
Craft 10 items.
Earn 1000 coins.
Earn 10,000 coins.
Earn 50,000 coins.
Discover gold
Discover diamond
Reach the depth of Abyss.
Reach a depth of 3000.
Purchase 5 upgrades.
Purchase 20 upgrades.
Purchase all upgrades.
Complete your first mission.
Complete 10 missions.
Equip 3 relic at once.
Discover all relics.
Craft 50 items.
Craft 200 items.
Obtain a legendary blueprint shard.
Discover Celestium.
Discover Adamantite.