I excerpt only the penultimate phrase of so as to avoid the spoiler in the quest (which I will say was most unexpected):

you will die for my Master whether you wish it or no!
I assume that the final word there should be "not". I don't think, based on this NPC's other dialogue that this is a dialect issue. For those who want to see the rest of the quest dialogue... go here - and no it is not some huge game spoiler, just a quest spoiler.