Not bad. Though the instructions don't actually mention any controls. How to move around was initially unclear (I assumed WSAD). Conventional wisdom generally implies touching monsters harms the player-character, not the monster, so I avoided touching them and kept trying to find the "attack" button. I'm able to continue attacking monsters after they're defeated, so it was unclear to me that I was just wasting time stabbing a corpse. Lastly, the game often stops recognizing my keyhits like [spacebar] or [R] when I try to return to the game or exit the credits menu, so I have to refresh the page.