Honestly, I don't think I've ever done that. Even ignoring the part where I don't try for "100% completion" on any single character, I don't think I've even ever found all the non-trivial content in Beth games across multiple characters. Haven't found all the bobbleheads or "unique" weapons in Fallout 3, haven't found all the artifacts in Oblivion (Umbra, for instance), still haven't done all the guilds or been to all the main cities in Skyrim (for some reason, I never get to Morthal
). And I've never done a "level all the skills" character.When I'm "done" with a character, though? Generally, I'll either start a new one (if I have a new playstyle to try; or a new set of mods that were incompatible with the previous ones); or I'll switch to a different game. A few months later, having saved up a new bunch of things to do, I'll make a new character and play again.

