Cool game and it definitively has that Mechwarrior vibe to it.
i like the wasd mouse combo controls, fits perfectly for this style of action, i had a similar issue where i didn't seem to be able to switch weapons with the Q/E keys and since i couldn't i also ran out of ammo at some point.
Other than that it has a nice presentation and solid controls, just too bad it doesn't seem to have sound :(
but regardless nice entry :)