Welcome to Librarium Online!
how do you kill orcs keep in mind i have necrons plz help
thx in advance
Posting the same message over and over isn't the right way to get answer, mate. Post in the Necron forum, or the Orc forum on the "How To Beat" sticky. Not all of them, or you'll be struck down by the mighty mods.
As to your question: Hit them. With a pointy stick. Twice.
As to your question: Shoot as much as possible, focusing on transports if they have any, focus on individual mobs until they aren't a threat and then switch target, and intercept those who get to too close with Flayed Ones or Pariahs.
How about starting ONE topic in the right forum.
*Shoots, Scores, Celebrates*
And yes, we strike from everywhere, even the shadows so watch it.