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