This strategie is op and Gamebraking .
no send wave 1 jusat upgrade tier and build 2 lurker assap
wait for a real Wave ( burrow==>unborrow[really remove it or give it 60 sec cooldown or whtever] )
and Win becoz u will always have lurker with op range and extremly high damage behind u'r army killing the Enemy army
U can not counter this tactic becouse every t 1 unit is Ground and 2 build a detector u need 2 get tier 2 so if u build a detector u spent the same amount of money as the Lurker player did.