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