Board Thread:Lore Discussion/@comment-71.61.178.23-20130722105712/@comment-71.61.177.24-20130823132527

You can if you enter their realm, but nobody said anything about killing any Daedric Princes. The idea was to convince some to join and then simply defeat the rest without properly killing them. You could kill their Nirnly form, but that's not the same.

- WorshipsMeridia