Step 1: Click on your profile image or icon located in the top right corner of the screen.

Step 2: Click on the 'Achievements' tab

Step 3: Find the achievement you want to download and click on the green button (as shown in the screenshot below).

Step 4: When you see a pop-up of the achievement, click on the 'View Achievement Page' button.

Step 5: You should then see a new tab open in your browser with the achievement and be able to download it by clicking on the 'Download PDF' button.