Nice visuals. Very atmospheric.
I know you have the controls listed on the page itself, but I think you should make the controls the first thing you list. I had to scroll to view them, and by that point I was already getting attacked by a monster.
Thankfully, the monsters in the first levels come at you so slowly you don't die right away. Maybe you could do a tutorial level where you teach people the basics of moving and attacking, just so we get used to controls before getting thrown into the action?