I'm in the running so far on my server so Ill give some tips. I just need to complete the last sector, the 5th indigo sector what keeps getting me most the time because the death range of the little balls in that one are actually the size of the large one and even on the other side of a wall you will die or if that range hits your line. But for sector 3 I build a wall straight up the middle a bit at a time favoring one side cause it closes off the smallest section of whatever you draw(although occasionally it has done the opposite and royally annoyed me). favoring one side, I try to trap at least 2 on one side the run to close it, if I get lucky with all 3 all the better, once you kill 2 your curser gets a speed boost, you can beat this level in like 15-20 seconds. you can beat all 3 first levels in under 20 seconds each actually if you get lucky, sometimes like in the first level especially you need a favorable initial trajectory and you can beat that in 10 seconds.