Command & Conquer: Generals - Zero Hour/China Tank General vs. General Leang (SuperBoss)

Don't waste your time with a conventional assault. You can clear the entire lower part of the board of all enemy forces and post four Emperor Overlord tanks at the bridge leading into the enemy base. It would be hard to force an entry, because eventually hit-and-run rocket buggies combined with MIGS will be too much. It is also too hard to get a sustained air attack through the anti-air defenses and the enemy MIGS will be a continual harassment that is difficult to find a good counter for.

Walkthrough
Build your base to the point that you can build a minimum of three Emperor Overlord Tanks, a Nuclear Missile, and a couple Helixes units. Upgrade the Overlords and Helixes with Gatling Cannons. If you can place a single Emperor Overlord on your side of the bridge leading out of your base, it will successfully fend off any ground assault into the base. It's also a good way to quickly train your behemoth up to veteran status. When it reaches that point, rotate the next in. While you're building up and waiting for your forces or missile to get up to strength, use supporting arms (generals powers) to clear any anti-aircraft units from the bottom and right sides of the board up to where the civilian building war factory and tanks are south of the river at the east side of the board.

The basic concept is a well timed helicopter assault. When you have cleared the route, load two veteran emperor overlord tanks into the Helixes. It takes some practice and good timing to pull this off well. Launch your nuclear missile at the bottom right corner of the enemy base so that the fallout area will neutralize enemy forces and clear anti-aircraft for an LZ. With good timing, you want the Helixes to fly along the bottom, turn north, and fly up the eastern edge of the map to arrive in your cleared LZ just as the radiation disappears (for maximum effect). If you can, insert your overlords, fight off the immediate counterattacks and then start working your way north and then west through the base. As you make progressive gains, ensure you're checking on your own base, making repairs, and keeping yourself from getting wiped out. It gets easier if you can wipe out the airfields – then your overlord at the bridge in your own base can fend off everything else.