Its not hard only time consuming.
In the region of Daggerfall you will need to complete solo dungeons and explore/visit the eyes on the map.
Tip for solo dungeons is to go straight to the boss and not focus on trash. Its very time consuming to kill the trash. The boss has always a diiferent name then the trash mobs. And most of the time he stays in the big rooms.
All over the web are interactive maps with the locations. And your achievement list you will see how much you need to have before complete.