I recently started an Eldar game in Soulstorm, on Easy difficulty. (I like to play this way)
The first faction I conquered were the Necrons, and I have all Kaurava III under my banner. My next objective is Chaos, but it appears that the map of Morholt Range is a tough nut to crack with eldar: Not even 5 minutes in, and I'm already swarmed by two Defilers and at least two Horrors, plus the marines and the Chaos Lord.
Is there a strategy to cope with this scenario, or should I forget this way and tour all the Kaurava system instead?
It would honestly be disheartening for me, as I wanted to get in the eldars' shoes and deal first with Necrons, Chaos and Dark Eldars UNLESS the Space Marines attack me first (which appears that won't be the case), but I wouldn't have other option otherwise.
EDIT: Thank you all for your kind answers and tips! Thanks to a combination of better picking engagements, microing counters more intensively, deploying Wraithlords and counter-attacking their bases, I managed to clean the map from Chaos and score a crucial victory!