Drill Core achievements

Kill Arachnor for the first time

Survive 100 nights

Complete a contract in less that 10 days

Hire 200 workers (cumulative)

Survive 40 nights

Upgrade your Division to level 20

Have at least 30 available iron

Complete 10 contracts

Complete 6 contracts

Upgrade Earthcrusher platform to level 12

Complete a contract so that the core's health is less than 10%

Kill 10000 Aliens (cumulative)