Two thoughts:

I might have led with hamstring, since assassins are arguably more dex dependent than other folks. Plus it's not as important to make him drop weaons since he has unarmed defense. But I've never played a dagger spec, so what do I know.

Also- fluid deceptions seems like an odd choice to pair with dagger, since the feints reduce the amount of chances you have to land concealed attacks.

Honestly, I'm amazed Zridv won this fight. I always found it difficult to fight warriors when I had assassins. You landed artery and hurl chest, he had a couple rounds to bleed, then ate an oblit from your outlander thing. Then again, he got the big kot on the first try, which is big.