Basic 4 decks

By mustplayor, in Warhammer Invasion Deck Building

Hi guys, so I have picked up the game a few weeks ago and we have been playing with my friend a lot.
We finally tried combining armies and played orc/chaos vs empire/dwarf.
However it seems like I literally don't stand any chance against what my friend has constructed.
He rushes with a huge amount of cheap orcs and chaos units, snipes me with nurgle and dark elf sorceress, destroys my supports with his quest and if things go wrong for him he just troll vomits the board. He always develops all areas so I cannot aoe him with my spell can't remember the name.
I basically get owned every game against that.

Any advice what I might be doing wrong or is it always like this?