Beautiful style and a very retro feeling through the music.
I found the enemy too direct and it was not possible for me to surprise them in the time I played, perhaps my tactics would improve in time. It worked fairly well on my laptop which is a big plus, but there was a lot of stuttering in the framerate too! The config menu access may be broken, I couldn't activate it.
A very interesting idea and solution, I enjoyed my time with it.