Here is the full list of all 12 Overcraft achievements.
Earn 1,000,000,000 Ink.
Earn 10,000,000,000 Ink.
Earn 25,000,000,000 Ink.
Earn 50,000,000,000 Ink.
Complete Tier 1 Research.
Complete Tier 2 Research.
Complete Tier 3 Research.
Complete Tier 4 Research.
Complete Tier 5 Research.
Complete Tier 6 Research.
Complete Tier 7 Research.
Complete Tier 8 Research.