User blog:Imrulkays1/Reward for killing Kalameet?

So I'm playing NG+ and this is my first time fighting kalameet and the boss seems to be frustratingly hard for me. I mean I defeated Manus no problem but Kalameet is giving me trouble. I know the boss fight is optional but if there is a great reward why not keep trying. So I wonder if I should continue trying to kill the dragon or leave Oolacile for once and for all. Thank you.