Hypernovae are evenrarereven rarer than supernovae, occuring in stars at more than 30 solar masses, destroying the star that goes hypernova. This post states a hypernova releases several million times more light than all of the Milky Way’s stars put together.
A safe distance offrom a supernova from Earth is considered 50-100 light years. How far would a hypernova have to be from Earth to not cause significant damage to the Ozone layer, and how far not to not destroy all life on Earth?