If you just want the badges, quickly get to the sky by a launcher and spin and flip to the clouds, there are a lot more multiplier gems up there and when you get superman mode, kill a bog fly, you get A LOT of points.
The sniper needs to penetrate multiple zombies, being able to shoot only one at a time and slowly, I hate it how the advantages of a sniper in mostly every game are completely nulled out and the disadvantages are even more enhanced. =(