DARK SOULS™ II: Scholar of the First Sin Bossfights Guide - Old Dragonslayer

This fight can be very difficult, especially doing it solo so i recomment summoning another player. If not you should be a fast character and master the dodging skill pretty good, and use long range attacks mostly. But if you summon another player, i would definately suggest using long range attacks and let the other player be the one distracting the boss.