[quote=TentacleLord]
Three things: First, Increase the height, that's about a man's height plus a bit. Comparatively, if it weighted that much in such a small area it'd fall through the metal most of the time rather than being mobile.Second, make a better physical description or find some sort of suitable picture.Thirdly, even with all that stuff in, no defense is perfect against everything.Other than that looking good.
[/quote]

1) Modern MBTs are around that height. In fact, the M1 Abrams is about 8 feet tall ([url=http://en.wikipedia.org/wiki/M1_Abrams]), which is about a foot less than what Sachmis is currently stated to be at. Older vehicles, such as the M4 Sherman,([url=http://en.wikipedia.org/wiki/M4_Sherman]), pushed 9 feet. Additionally, the pilot of Sachmis is actually lying down in the machine, his posture mimicking that of a light cycle rider's:

[img=http://furiousfanboys.com/wp-content/uploads/2013/04/Tron-Legacy-light-Cycle.jpg]

When it comes to weigh distribution, four legs technically beat out two, as the pressure can be expressed across four surfaces rather than a simple duo. This means less pressure focused in one area. If it's too much, I can widen Sachmis' paws, which would make sense given the terrain she and her controller will be navigating through, with the paw-widening further decreasing her weight's impact on the surface (by increasing the paw's surface area) that she is walking upon. In all technical sense, this isn't even needed. 

For a frame of reference, the M1 Abrams actually exerts [i] less [/i] pressure on the ground than a civilian car, like a Ford Focus or even an H1 Hummer. This is a 60-70 ton MBT mind you. 

Four-legged creations, by default, are going to be shorter than two-legged ones. It's why you don't see tigers that are six feet tall, yet they weigh hundreds of pounds. 

And for the record, having a 50 foot machine that only weighs 60 tons makes little sense. The internal structure of that mech alone is going to be rather hefty; add on the armor and the weapons, and the weight increases. You may want to checked out this wikipedia article on the square-cube law: [url=http://en.wikipedia.org/wiki/Square-cube_law], since it will explain in detail what I'm getting at. 

In terms of the defenses, I know the limits and capabilities of what I put into my sheet. I wouldn't do that if I didn't know what this stuff does.