Orcs must die2 - Big Valleys

 I used tar, arrow wall, haymaker, brimstone and barricade.

 

 First of all, I set up the one barricade on the right path

 



 and then one barricade on middle path.

 All the orcs must come through this left path

 



Protecting barricades from KOBOLD SAPPER is the most vital thing on this level.

So brimstones are needed in front of barricades.

 

 

 If level is nightmare, Extending Kill zone is indispensable.