It was a nice use of effects and mechanically it felt reasonable to play.
A did notice that i had to be very slow when progressing through the game though. Taking the process of inching forward and spamming attacks to slowly but safely take care of enemies. I kinda lost interesting when the winning strategy was just play it safe.
I then got the staff and while nice, it further push me towards that, play it safe remove the challenge play style. I ended up dieing to the '2nd shop keeper' my accidentally attacking it. I don't know if this was meant to be a boss fight but after i died to it i could not restart the game. Unsure if you made a game over screen but i guess i wasn't able to progress after i died.
In addition the sound effects were a little bit too loud for me. I think that adding some ambience music would have really added a lot of the game as well.