This achievement is for clicking on the moving objects on the title screen 200 times. There are Steam achievements that will pop early than this (Rampage! after 1, Dominating! after 50). There is also an in game achievement that will pop when you get 100. Getting up to 200 should take you in total around maybe 10 minutes or so. Make sure you don't stop until you get this specific achievement, because you may mistake this for the 100 object one or other in game achievements that pop up for clicking on specific objects.
If you have any ideas on how I can improve this solution, I'd love to hear them! There may be something that isn't here that should be, or an easier way of doing this. I'm always open to suggestions. If you notice any typos or poorly phrased sentences, please let me know.