This game itself is Path of the Dragon and those who managed to finish it without looking at single hint are chosen as initiates for becoming bloodsuckers! I could believe that.

Seriously though, I played good few dozens of adventure games in life and when thinking about difficult ones it's typically because insane moon logic, obscure mechanics, clunky controls, cheap deaths, dead ends, time limits or pixel hunting. Here's very little of these things though. I wasn't even mad about checking walkthrough anymore, it just made me feel like little idiot. Usually when I have to use hint it's either because I missed something obvious (the worst) or I conclude with "well, I would never figure that out, it's stupid" but in this case it was rather: "well, I would never figure that out, I'm stupid". Because when I read solution it all made sense, I was just too lazy or not smart enough to find it on my own. No immortality for me.

Kudos to devs for one of the most unique games puzzle-wise I ever saw. Really makes me wonder how many folks completed it without help.

Proof of dedication.