It sounds like you got the idea from batman, or the new turok they recentley made. It has a very good start, the end of it is a little awkward compared to the rest of it...a bear with a foot replaced with a cow leg as you might put it.
the banging is from batman for sure
can't go wrong with it though.
Kind of sounds like the Batman song from the movies but its good.
Loosely reminds me of the Fallout 3 and Fallout: New Vegas theme. Bad ass.
Please contact me if you would like to use this in a project. We can discuss the details.