DethKlok86 - Shoot the bottom of the middle boxes by shooting underneath the righthand box immediately after you have reset the level. You will notice that there is a gap. If you time it right, the green bow will fall to the right. You then use your second shot to push the closest box further along the platform and your third shot to keep the green box on the platform. It took me a little while to get it right but it is possible.
I cannot do the Kar Speed or the Shotgun speed. Anyone managed to do them yet?
Its not bad this game, it plays fairly well and I like the challenge levels for each gun. The Achievements are pretty pointless though, I've found myself clicking as fast as I can on the Warm-Up level just to burn through rounds.
Would be good if the Defense, Efficiency and Offense levels were unique for each gun a bit like the challenges. 3/5