This was a personal project I did to get more comfortable using Blender.
I had a lot of fun playing around with the different smoke and fire simulations, finally sculpting something using Blender instead of zBrush, hand modelling motionblurred water droplets (lol), and compositing the image inside Blender (instead of Photoshop).
The xenomorph was only really sculpted for the angle it is mostly viewed from, and doesnt even have legs or a tail...
Pick up the Aliens: Nightmare Asylum graphic novel if you have the chance! It's one of the prettier Alien comics, and certainly is my favorite.