The challenges are listed below by category, most of the challenges have links to youtube videos explaining them. The official list, as well as point breakdown, for the challenges is listed in the Rules.
Getting Licensed
License test prep
Get licensed
Join a club
STEM Activities
Prepared Citizen
NWS SKYWARN storm spotter certification
Targeted contact
Miscellaneous
Unit picture
Social media posts
Armed Forces Day Crossband Test
Worked All States
Professional communicators