Where can I find the meaning of all the icons in Battlefront 2?

When playing the campaign cleanser, there are blue reach icons. Once you reach the next level, there are red eliminate icons. I figure the blue ones with a number followed by an m is a directional, for example 20m with an arrow that points left means in 20 meters, you need to bear left. But I can seem to determine what the other icons are trying to tell me.