Abso-fucking-lutely awesome!
I reckon I spot missile bays, machine cannons, and something looking either like two dual-railguns, or dual-cannons of some sort.
Immediate thought: "Boom. Fun times."
It may be a sketch, but this has an amazing level of detail for something you make seem like you drew in a few hours. The shading in the first panel especially amazed me - I honestly haven't seen shading this good in a sketch, ever before.
The different models of the same mech in action and while idle made me chuckle a bit. The running one in particular, in the last panel. It looks silly, sort of, but it's one of those things that literally make you die laughing.
You laugh at the silly running.
You find yourself blown to pieces, having more holes in your chest than a swiss cheese!
Fantastic! I'll be looking forward to more like this.
~Dott