You can only pick up items if you are really really on top of them, it should be more forgiving. Also I would enjoy them better if there were a lot less items and they had more uses, as in 2-3 uses most of them are over.
The art and music is okay, but I really miss sound feedback for the actions you take. For example that one last room with appearing buttons was a pain for me to understand, since it's so big that it doesn't fit in the whole screen and I didn't see that more buttons were spawning. I started to think that maybe I didn't press the button right, so a sound "Click" so you know you pressed the button would be great. Also when I put the machine in the socket I didnt get a feedback that I did it right, it feels like I just put it in the wrong place, as it didn't fit in the socket and it didn't make any light, sound or move into the center of the socket.
In one of my runs I didnt pick up the machine and instead went to clean the way before bringing it (I think it makes sense, since you can't attack while you have it on you), and realized monsters are only going after the machine and not after you, causing some weird stuff like this: screenshot.PNG
I get that maybe I did it wrong and you are not supposed to play like that, but I wanted to give that feedback. Maybe the should chase the player if the machine is too far?
Overall it was a nice experience, other than what I pointed out, thanks for the game.