Here is the full list of all 32 Return from Core achievements.
Excavated 2000 Ore
Excavated all Non-renewable Rocks and Ores in One Level
Planted 24 Types of Crops
Harvested Crops 1000 Times
Made 20 Top-Tier Dishes
Completed the Super Drill Components
Reached the Core Layer 2
Reached the Core Layer 3
Reached the Core Town within 50 Days
Reached the Core Layer 5
Unlocked a Complete Genes
Used Fist to Strike Back a Flying Pickaxe
Used a Total of 1000 Bombs
Revived 100 times
Until Entering The Core Town, Collaboratively Manufactured Items Using Super Drill Fabricator Does Not Exceed 100
Laid 100 Transportation Tracks
At least 10 Deliverers Operating Simultaneously
Crafted 16 Types of Pickaxes
Laid 1000 Tracks
At least 20 Rail Platform Operating Simultaneously
Used Less Than 2000 Fuel In the First 2 Layers
Killed Any Giant Boss Monster Without Taking Damage
Cleared a Battle with a Monster Girl in One Go
Killed 10,000 Monsters
Raised the Affection of 5 Monster Girls to Level 5
Interacted with 5 kinds of Furniture with Monster Girls
Raised the Affection of Any Monster Girl to level 5
Played games with Monster Girls 50 Times
Constructed 100 Pipes
Triggered 200 Interactions with Monster Girls' furniture
Caught 12 Different Types of Fish
Caught 100 Fish