Time Clickers
90 Achievements
100,000 XP
Google Play
Exterminator 1
Destroy 5.00K Cubes
1,500 XP
47.29%
How to unlock the Exterminator 1 achievement in Time Clickers - Definitive Guide
Just destroy 5,000 cubes. Easiest way to do it is let the game sit and auto itself, and you should easily get this achievement.