I had some fun with this; the visuals are great, creating a nice atmosphere, though some spooky music would really have elevated that feeling.
I found the three weapons (that I found) to be pretty useless. By the end there were just thousands of enemies bundled up together because the range of everything but the axe was negligible, so I never really damaged them that much (since getting that close seemed dangerous). Like someone else mentioned, the healthbar for the player isn't super visible -- the colours sort of blend in with the background.
I also would have liked to see some novel attack types that fit this sort of eldritch theme; i.e. some more dark magic sort of stuff, rather than things that are pretty common in these types of games.
Anyway, nice work!