turn on auto skip place a 0-2 demolition then a 1-3 sniper turn off auto skip at wave 9 skip wave 10 skip wave 13 to upgrade to 0-3 demolition skip wave 14 and upgrade sniper to a 2-4 place another sniper and skip wave 18 airstrike the beserker whenever the teleporters are near it and upgrade your sniper to 2-3 airstrike what the teleporters spawns and upgrade your sniper to 2-4 then place another demolitionist 0-0 and airstrike the last elite soldiers and upgrade the demolitionist to 2-3 and upgrade the other demolitionist to 2-3 too and place a 0-2 demolitionist and airstrike the teleporters and the sprinter m5s and airstrike the last sprinter m5s and you have won after killing the ufos