How can i make zombie emitter so i can fight against zombie hordes?

Or more exactly how i can have them to kill me instead of just standing with no weapon.

Make a Pinned emitter that emits zombies. Using the Zombie Clone tube in skirmish will not work, because it's completely controlled with Lua.

If actors do not have a weapon, they basically crawl on you/ try to body slam you to death. Give them some weapon, claws or something.

Sorry, Magma, but the zombie tubes are actual working emitters. The only Lua involved is in turning them on and off. With a little editing they'll pop out zombies continuously.

I know. But as they are, they don't work in skirmish. With editing, they can be made to spawn zombies on certain intervals. It's just that the way they were created, if you aren't in Campaign they won't function. The script made the tube only spawn zombies when the player entered the cave and while they were inside the cave.

Edit; After re-reading my post, I basically just rephrased yours. meh.

Long story short; With editing the Zombie tubes will work.