Alright, for those who want to get this achievement without losing a finger by pressing a button for 8 hours or more I would suggest you guys to use an Auto Clicker, there are many versions through the Internet, just search for it (I used GS Auto Clicker, pretty simple and functional)... I think some people from TA will consider it as some kind of ''Cheat'' but if you wanna grind it by yourself go ahead and keep pressing a button over the cards for 8+ hours ... I'll pray for your fingers don't rot
Now, choose whichever game mode you want that is possible to do it... I did it on Klondike game mode, just put your mouse over the stock cards and let the Auto Clicker do the ''magic''. It took me 2 hours and 30 minutes with GS Auto Clicker to unlock.
I'm not doing any advertising to a specific program, I'm just stating which one I used that worked perfectly.