The army has worked on this for years. There have been some failures,but here it is: the Hexstor CS50.
This state-of-the-art mech is equipped with a heavy laser cannon and a revolving light laser cannon. The other arm is fitted with dual laser claws, a laser welder/cutter, and a 140 watt light. Behind the cockpit are 2 seeker bombs. They are explained on another page.