GK-Inquisitor hunting Dark eldar! Help needed!

My friend just switched from SW to a GK Inquisitor-list...doh!

the last game he had:

LR w/ 8 deathcult assassins (LR with bolter-system and autocannon)
Chimara w/ 3 Jokaero
Chimera w/ 5 Guardsmen (?) with Melterguns
2 Riflemen-Cybots
3 Razorbacks w/ Guardsmen
only GK: GK-Captain (Special Character) that allows you to use Imperial Guard- and Inquisitor-units

His deployment reminded me of old Cowboy-Films, when the evil Indians attack and the coaches form a little castle to protect the settlers...

Anyone an Idea how to crush that castle?

Yeah I ran into something like this over the weekend.

I wish you nothing but the best against it, however I am changing up my entire list to deal with this as well as massed SW spam. IMO the best way to deal with lists like this, is to not even be on the board and that means either a WWP list or duke + deep strikes. Im not a fan of deep striking transports fully loaded with guys, but Im trying to find a balance.

Pop the dreads. Then pop the other vehicles... then eat all the squishy insides.

Inquis Spam isnt the hardest list that can come out of the GK book, but it can be difficult if not handled properly. First target will always be those Psyflemen. Once they are taken care of, you then begin to go down the list (LRC, Chimeras, Razorbacks) Remember that for everything other than the assissins, even our warriors will make them piss their pants and run. For those assassins you just run your wych unit into them and laugh

I myself am a GK player in addition to my Dark Eldar. GK's were my first army because I liked how they looked and I have quickly come to realize the advantages that army has so they mostly sit on the shelf unless challenged.

Now that the disclaimer is out of the way... kill the Psyflemen. When I field mine (I have two converted into venerable dreads and painted as a pair I lovingly call "The Brothers Grimm") I am very thankful when my opponent directs his shooting at other targets. I usually would center a good deal of my strategy around them and their kill zones.

I never used an Inquisitor army (though my HQ choice was usually an inquisitor as I did not want to spend the point cost of GK HQ) so I do not know specific ways to counter the entire list but killing the dreads should be priority number 1.