You are way more skilled than me, the guy at the serpent shrine took me no less than 10 attempts before I realized I could stealth him and then another 5 or so after that to kill him and boy was it messy.
Have you gotten to the fight at the top of the castle yet? And if so which one did you get?
No, not yet I haven't. But that's going to be pretty much the next place for me to go. I did see some enemy through the gate at the bottom of the castle which I'm going to look into first, and then make my way to the top. Might not be until tomorrow though. And holy crap you can stealth him? I swear I walked in stealthed but he was aware of me before I could get close. And no, I base my victory on pure luck, and I heard the garage door start to open in the middle of the fight and I knew my wife had arrived with our dinner, so it was a now or never (later) fight.
Edit: You replied while I was in the middle of my edit, so I dunno if you saw my last bit.