Bulletstorm: Full Clip Edition

See Supernova Achievement. You should ding this while working on that one. Try your best on every echo and you'll eventually get here. Try to maximize your points on every level with using as many unique skill shots as you can and don't forget you have skill shots related to kicking/leashing/thumping/environment besides the standard weapon ones. You can couple a lot of the weapon ones with thumping.