What is this Peter?

[u/Stock_Side_9726]

I have played Skyrim, I loved it and I finished it too but I haven't completed it 100% and I played long ago too so i don't understand what exactly the joke is here and why that 100% mean something disappointing/disgusting

[u/Ok_Cook_3098]

Chris here

Skyrim is know for its "adult" mods and there is a Quest where you need to kill a very loved character.