I got to 9 lightposts! I feel like this concept has a lot of potential if you polish it up.
I feel like starting with a spark would make it easier to get, also I spent the first few runs trying to light the light on the light bulb part and that didn't work, so maybe a hitbox that goes higher would make it more intuitive. One other thing I would do is put a limit on the maximum number of enemies that spawn and I feel like having the darkness bar justtt a bit higher would make it a bit better feeling, but difficulty is personal preference. Oh and about the sparks, sometimes I couldn't capture them even when they were in the triangle, they also pushed me around a few times so might be a good idea to disable their collision.
Once I got how to play it was pretty fun, I liked baiting enemies to one side while in the light to create a path through them. Well done! fun entry