There's a shorter way to pop these on the PC, and doesn't involve typing. Credit to RAILBAIT for the idea, but no extra steps are needed.
Yes, you need the PC version.
Press ctrl+shift+F4 at the main menu.
On the left, click on Inspector.
Click on Services (with a number after it)
Click on Element 0 (AchievementService)
Click the BIG Unlock All button in the middle.
Sir back and profit. It should take roughly... 10 seconds to get to the button. The popping will take considerably longer.