FsHub has a variety of various achievements for pilots to fly special flights/legs usually under some special requirement and be rewarded with a badge that shows on your account!
You can view your achievements by clicking on your username on the top right and clicking "My Achievements".
If you would like to hide the achievements check out the setting "distraction-free" mode under the Account Settings article.
Below you can see how the achiement page looks. Any achievements that is coloured "black&white" means that is not completed.
You can also use the dropdown (1) to toggle which achievements are shown.