thanks for help, I finaly managed to do it, took me way too long. first of all I had bad upgrades and second of all the lvl 2 rifleman is surprisingly stronger then level 4 rifleman...good idea giving lvl 2 0 second reload time. and that japanese rhapsody I swapped the rockets for rifles in last wave, which did the trick. the upgrades I used: full left upgrade of rockets, full right upgrade of scouts and 2 utility upgrades. The game wasn´t that bad, but I have played better. 6/10