But it wasn't points for that one, it was the one where they all drop down from the ceiling at once, and you have to shoot them to get them to retract, so it seems to count each one only once. I cleared them all several times with lots of time left and it still only ever game me 46/48, every time, regardless of how many I hit at once.
Could be just a bug in mine, maybe I'll go back and try again and hit more at once.
I didn't know you could move side to side though