This music is way too dramatic for this game. It sounds like end boss battle music. Which it probably is, just stolen from some other, possibly enjoyable game.
The twist to Illuminator, which otherwise would be the bare minimum of what could be considered a video game, is that the lights don't work. Killing one of the drones aimlessly wandering the platforms, whose only crime appears to be having enough phosphorus in their bodies to light the room for a few seconds, provides you a chance to locate the next drone to kill until they're all dead and you go to the next room.
What Illuminator really needs is a point. Someone to rescue, some object to find. Really any reason to be slaughtering so many defenseless people and giant butterflies would do. 'Cause, y'know, next time there's a power outage, my first response will be to find a flashlight, not start incinerating everyone.