Software used: 3dsMax/Vray, Zbrush, Photoshop, 3DCoat

Process: 
Creature head was completely modeled in zbrush.
For suit I used combination of 3dsmax and zbrush.
Rendering was done in 3dsmax with vray renderer.
All models were UV-mapped in 3DCoat.
For textures I used combination of zbrush and photoshop. 
Final composition was done in photoshop.

Textures/images are either "hand painted" or heavily modified pictures.