It was pretty fun.
The graphics have not the same style, did you get the sprites from google? Well, you should search for similar images, you'll notice the difference.
I think it was a bit easy, even in the hardest mode.
I liked the idea.
Btw, it makes sense with the part of "Nothing Dies" but not so much with the "One Room". You could have changed the background so it's an actual room or something like that.