How to transfer a large amount of photos from WhatsApp chat to PC?

So i have a WhatsApp chat with over 2000 photos in it. Problem is that i chose not to save photos directly to my Camera Roll so i have all of these photos that i now want on my PC, but i dont know how to transfer. I tried via E-Mail but as expected it didn`t work.. Is there a way to access those photos and copy on PC??