Orc vs. Orc is pretty much a free win for me
What i do is i get fs and fast grunts creep right when fs is out
when i hit lvl 2 i harass with fs and the 2 or 3 grunts i have. then i start to upgrade whale getting more grunts. When upgraded get bout 2-4 kodos more catapults and more grunts kodos kill air and eat their grunts. If they have a lot of air you just have to get a few bats. dont for get sec hero either if you can get a naga but if no tavern get a Tc and either war stomp or wave and endurance aura