Quoted from Mahoyvan:
Whats the deal with the red spider arrows?
Ive noticed that part way through a game theyre all lit up solid and as i burn through them they go unlit.
Am i in some mini mode or something?
They light for each major shot when you end a white mode (win or lose I think)...I don't remember if they light after villain fights, but I think they do there as well. I'm not sure how many points you get, but there is a spider champion high score list.