Achievements | They Are Billions Guide They Are Billions guide, walkthrough
Last update: 27 June 2019
Currently, They Are Billions has 18 achievements. Most of the achievements require you to kill a certain number of infected.
 | >Survivor Level 1 Description: Complete the survival mode on easy. |
 | >Survivor Level 2 Description: Complete the survival mode on the second difficulty level. |
 | >Survivor Level 3 Description: Complete the survival mode on the third difficulty level. |
 | >Survivor Level 4 Description: Complete the survival mode on the fourth difficulty level. |
 | >Colony Mayor Level 1 Description: Build a colony that has 1,000 colonists. |
 | >Colony Mayor Level 2 Description: Build a colony that has 2,000 colonists. |
 | >Colony Mayor Level 3 Description: Build a colony that has 5,000 colonists. |
 | >Colony Mayor Level 4 Description: Build a colony that has 10,000 colonists. |
 | >Infected Killer Level 1 Description: Kill 10,000 zombies. |
 | >Infected Killer Level 2 Description: Kill 50,000 zombies. |
 | >Infected Killer Level 3 Description: Kill 100,000 zombies. |
 | >Infected Killer Level 4 Description: Kill 500,000 zombies. |
 | >Infected Killer Level 5 Description: Kill 1,000,000 zombies. |
 | >Infected Killer Level 6 Description: Kill 2,000,000 zombies. |
 | >Infected Killer Level 7 Description: Kill 5,000,000 zombies. |
 | >Infected Killer Level 8 Description: Kill 10,000,000 zombies. |
 | >Infected Killer Level 9 Description: Kill 50,000,000 zombies. |
 | >Infected Killer Level 10 Description: Kill 100,000,000 zombies. |