I know you didn't ask for this, but I'm bored, what the hell.
blown upon?
MD doesn't shoot plasma, but I guess that's personal "preference."
I've never noticed "waves in the air" from an MD, but again, if you like.
"Would've thrown up right then were it not for a sudden movement. I spun around." These are not good sentences. Try "I would have thrown up right there had I not spotted a sudden movement to my right. Spinning around, I came face to face with the Sarge." OR "I would have vomited instantly had I not been distracted by the sudden movement to my left; turning, I saw the grinning face of Sarge." The first one is better, but whatever.
The next part is a bit confusing logically. You go from saying: "My brain went from somewhat drowsy and wandering to intensely focused." to "MD hung limply by his side, a beatific smile on his face. Slowly, he raised the gun and let off a single shot directly into the chest of my suit." If he really was so intensely focused, it is doubtful he would have allowed this man to slowly aim his gun at his chest.
"I knew the only thing keeping the titanium shell from ripping to shreds..." It took me a while to figure out what you were talking about here. You don't have to explain all the technology, (for example the ""electromagnetic shield generator"" works fine) but this one broke the flow of my reading. (Hey wait, the MD doesn't shoot titanium.. wait maybe he meant...)
Try turning the sentence that reads: "He had the gun raised over his head, preparing to strike; I couldn't have made a dent in the suit, but this guy had absolutely enormous muscles." Into something less passive, with more action, and split it into two sentences, eg. "Gripping his mass driver, he raised the gun over his head and prepared to strike. I couldn't have made a dent in the suit... etc" (Plus I don't think you really need this sentence, I would just scrap it, but keep it if you like.)
Again, I don't believe the luci shoots plasma, but whatever.
Full body circumcision... if you really like that term go ahead.

Just a bit strange.
I don't think the gun would be a few feet away from him, guns seem to be mounted into the suit, so the only way to have his gun to be lying near him would be his arm getting blown off.
"There were some body parts scattered about." -- Take out
some, it makes the sentence weak.
Husk of a shell of one is a bit repetitive. Try just "a shell of a former man", something like that.
Overall, nice work, your best one yet, so keep it up.

Wow, I just realized I think I wrote more critiquing your story than you did in the actual story itself.
