What are options to increase difficulty

dark-souls-2dark-souls-2-sotfs

What are all options to increase difficulty of Dark Souls 2? I mean game mechanics, not self-imposed limitations like "don't use a shield".

I know about:

  1. Reach new game+7.
  2. Join Company of Champions covenant.

Are there anything else? Something like the Dark Souls 1 Calamity Ring maybe?

Best Answer

Aside from the ways you already mentioned, you could increase received damage (actually, reduce your defence) by using clutch rings. They also occupy ring slots: