I admittedly did not get very far in this, but considering the permadeath locked me out to the point of not being able to relaunch the game, I'm sure you expected this would happen to people? I found it to be incredibly punishing and thought the limited field of vision hurt the game, rather than built suspense and atmosphere like you intended.
I wish I'd been able to relaunch and try a few more times to get used to mechanics and see what you worked hard to share with us, but, since you didn't want the player to come back more than a certain amount of times, I'll be tapping out too, I suppose.
It wasn't until AFTER playing that I learned the browser version is "hard mode." You should consider making that clearer in game, to the player.
This could be cool, but I don't like being locked out of something as a "mechanic."