Im currently working my way through the campaign on DA, ive been scrolling through the forums but havent found anywhere that has a guide to beat each level, is there such a thing?

If not, perhaps someone could enlighten me on the Achillie's Heel Mission. Small map, yourself and 3 allies against the Dread Lords, dont die, take the one planet the Dread Lords start with, Cakewalk difficulty.

The Torians nip round and steal all the planets. The Arcaens sit with one planet researching immense weapons they then give to the allied but wont let you have for the world even with great diplomacy and lots of other trade and gifts. The Altarians just produce loads of transports which the Dread Lords continuously pop. Trade Routes continuouly revoke. The Ai lets the Dread Lords systematically take all the planets, the allies put up little defence, any ships i create get crushed and then im repeatedly hit with transports until i surrender.

Its on Cakewalk and i still get thrashed, help!