Advance Wars 2: Black Hole Rising/A Mirror Darkly (Hard)

Block the HQ with a tank, move the rockets into the woods.

Target the neotanks, mechs, infantry, and medium tanks first, using rockets and artillery.

Lash will not attack Sonja's tank on the Yellow Comet HQ with her own tanks, being disadvantaged due to terrain.

Be careful for enemy rockets, and avoid exposing your own mechs.

A rout victory should then be easy to get.