Here is the full list of all 20 Loading Screen Simulator achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Your PC is slowly sucking in the universe
KALM DOWN! YOU GONNA DOWNLOAD THE ENTIRE INTERNET
Now you can make Loading great again
That’s too much! I don’t know if I can pay for this
Okay why?
Again?
Wow that was fast
Click…
Finally
Doobydoobydabbadoobydabadooda bedigabibblebede, It's a secret!
Get 100 points in the game
That’s Mega
Click the button 10000 times
You dirty little hacker ;)
I can work with that
Slooooooooooooo
Huh, I didn’t know that it was possible to win in console… cool
Click the button 1000 times
Click the button