Fashion souls always matters. I finished Bloodborne wearing a dress and a crown.

Finishing the foxes gives you 2 charms with improved capabilities. One is essential, massive increase in health AND damage. The other is more for stealth, but also great in any other build. It gives 15% slower detection AND massive increase in resolve generation.

The latter one basically gives you infinite resolve.

Ghost build is ridiculously OP. Do a double Kunai throw and kill a mob. Throw a bomb and kill a mob. Use smoke screen and do a mutli-assassination to kill a mob. You are basically untouchable.