Quick scene made for exercise. Mechanical spider is not rigged.

This .blend is not packed as to reduce file size but since i found all the textures randomly from google images except the ground which is from maxTextures

http://www.mb3d.co.uk/mb3d/Concrete_Seamless_and_Tileable_High_Res_Textures_files/Smoothed_Concrete_Grey_Holed_Plaster_UV_CM_1.jpg

, I've uploaded them in a folder to Google Drive for you to download if you so wish (except for the color texture due to lack of permission from maxtextures, which is why i've posted the link to it above).

https://drive.google.com/open?id=0ByZUjWdl0QXFfnkzaXJSNGJIX0swbmZFa0tMWTJ5RXZjdVdYWm4wazNJUEFVZkI2TmUtOGs

Rendered in Cycles at 5.000 Samples.