Just putting an idea out there, I don't expect immediate super-duper-high-quality stuff, but would it be possible to create an Alien actor (AKA:Xenomorph) from "Alien Vs. Predator"?

Also in addition, possible abilities/weapons could be:
-Claws:Acts like the shovel, but can also do damage
-Head-bite:A high-damage mouth come out of it's head, and returns
-Tail:Like the head-bite, it could shoot it's tail tip, which later returns, imitating a stab with it's tail, perhaps? (Also it's tail could possibly be a background effect linking the sharp tail-tip to the body)
-Climbing:Holding a certain key like "shift" would allow it to climb walls and ceilings (unless that's too complicated)
-Acid Blood:It's blood could maybe do damage?(Instead of blood, it bleeds Lime-green napalm)
-Acid spit:It could shoot a green projectile along with "vomit gun" effects (Again, green napalm upon impact?)

Also to anyone who's never seen "Alien" or other titles
A crap-load of Alien info>>> http://aliens.wikia.com/wiki/Xenomorph

Like I said just throwing an idea out there, do whatever you want with it!
I would be satisfied if only to see an "Alien" skin made.

This would be a damn good thing to do.
But the poses are gonna be awkward,since every single mod i tested farout (soldiers,dummy's) are in some sort of pose.

Maybe you need to create a mode of "standing",a mode of "crouching" and a mode of "crawling"?

Also i would like that crawling would be easier for those aliens

It was suggested a long time ago, and deemed either impossible or extremely hard to make (mostly due to the tail).

What if the tail was just a transparent sprite which is walktroughtable?

What?

a tail that cant be stepped on.

EAF has tails.

Yeah but they are not long as hell.

That's not why it was deemed impossible, it was because the tail had to both move and act like a weapon. Attachables in the shape of tails aren't exactly hard to make, but the Xenomorph tail doesn't just stand there, it has to adjust depending on whether the little beast is upright or crouching and it has to work as an animated weapon. A Xeno would look extremely odd with its tail going straight up when it scurries around on the ground.

First off, I apoligize for the necro.

You could just have the tail lower on the ground in all poses. Another possibility (that would only work if attachables could be to move, like a flap or somthing) is that you could have an attachable atached to an attachable in a sort of chain. finaly, do not forget about Lua. It is by no means impossible, only difficult. Then again, my modding expeiriance is very little, so I may very well be completely wrong.

Attachable aren't able to pivot so the chain is undoable.

Another possibility is to either completely ignore the tail, or just give the xenomorph one pose, and one pose only.

What if you made it only crawl? Maybe act more like a turret? They're not as scary when they're just walking, anyway.

If it will only stand these may or may not be a good start (sorry for the naivety or noobishness, I bet you already have appropriate sprites, but I just came across them):

http://sdb.drshnaps.com/display.php?object=9677
http://sdb.drshnaps.com/display.php?object=9676

Just to have alien actors without the tail, and stuff would be awesome , anyways here are sprites I've found