Against Eldar/Necron Bunker

Im going to play 3000 pts game with my DE/Tyranids against Eldars/necrons. Usually I dont have problems beating Eldars, but this time he is bringing Skyshield Landing Pad with 9 War Walkers and Eldar inside. With 4++ against shooting, guide and fortune, 16 wraiths as cover and 2+ destroyer lord attached to 5 wraiths, I have no idea how to bite such thing.

My list is:

Vect
3x 3 blasterborns in venoms
4x 5 kabalite + blaster in venoms
3x ravager

1x dakka tyrant
4x hive guards
malantai in spore
3x tervigon
20 termagants
1 biovore
trygon prime

He takes Anihil. barge, destro Lord, 16 wraiths, 20 warriors, Serpent + Fire Dragons, 9 War Walkers, Eldrad, lots of guardian jetbikes, skyshield landing pad.

Deployment will be hammer and Anvil, Purge the alien.

Am I already dead? Got only 9 lances, war walkers will rather for sure kill 3 skimmers/ MCs per turn and its hard to come close when Destro lord + wraiths deathstar awaits. Should i concentrate fire on Walkers despite 4++ save ? How to kill destro lord deathstar, he will LOS any darklight shot into Wraiths. Can trygon and Mycetic Spore land without scatter in his Skyshield?
Thanks for any input

Zanais wrote:

Im going to play 3000 pts game with my DE/Tyranids against Eldars/necrons.

Well that's just about the wierdest alliances I can think of

oh 3k... such a huge number... Also how is he allying Crons + Eldar??? Or how are you allying Nids + DE in the first place???

Pie plates and Templates would be your friend. Also if this is an Apoc game (has to be) use some of the weird strategems to get behind him or hurt his sit there strategy.