¬.¬
Are the stupid gray storm trooper guys the machines? If so, why are they fighting death? If the grim reaper things are machines, then how come the humans destroyed the earth? You need to make distinction between your characters. The animation was ok, but that was the only thing in the movie that worked out a little... I saw a bunch of text that went off screen all over the place, I saw things randomly appearing. Why would NASA make a 'worldwide laser system', and call it that when it only has 1 beam?
Work on plot. It will be much nicer.