Very scary! Loved the creepy breathing and the static effect as it got closer. Only gripe was I couldn't seem to kill him even after coating my knife with the concoction and throwing it at him, not sure if it was a bug or I did something wrong.
Good to hear you enjoyed it! As for the issue you mentioned, I can't recall any issues with the knife not working. Did the demon snarl and start chasing you really quickly? Because that's what happens if you try to attack it with the knife with the incorrect concoction (or no concoction).
I don't remember that, but if its possible to screw up the concoction that might've been it, I couldn't read the cursive text really well so I just grabbed the only ingredients I had seen. I got the message saying my weapon was coated but if that can be a fakeout that's probably it.