Walkthrough: Deploy your Warriors and flank them away from the Boom Cannon by flaring them into the trees. Afterwards, flare them towards the rightmost, high-level Rocket Launcher. After they take the Rocket Launcher down flare them to the other Rocket Launcher. As the second Rocket Launcher goes down deploy your Riflemen to attack the Boom Cannon. After the Boom Cannon goes down proceed to attack the HQ from the right side, avoiding the other Machine Gun.