Some Motorized Ugliness update 2: Now with the taste of double-barreled autocannon!

Can you advise good references of power armor with mortars on it's back?
I mean a weapon that does not fall on the shoulders and you have to bend your back in order to aim it at the target.

Also, I'm trying to figure out how the death animation should end: that is, he gets some small explosions in several places on his body, as if he had been fatally injured, or fired from something powerful, but then what?
Explode like a vehicle, without remains?
Fall to the ground?
Just freeze, leaning in like a puppet?

Maybe this could proof useful as a reference:

By the way - in my opinion the lower legs/feet of your model are a bit too big

@Jaykan
this is largely due to the view angle and peculiarities of the animation - the upper part of the leg is strongly compressed and twisted when bent at the knee - this problem exists in all limbs on simple skeletons.
In addition, proportions and selected references play a role - most of the power armor I've seen has massive sabatons.
In any case, thanks for the tip, maybe I really should reduce feets sieze.
I will try it.

What if the other helmet? Also I'd recommend 1 longer mortar instead if 2

@Hazop, I don't want add two mortars, but i need to know how attach mortar better => I need some references and suggestions.
Well, the first helmet variation was deleted, because I wasn't create backup for that version of model and it was corrupted by the bug of MdlVis(
I recreate it later if you want.

@Zess Yes please!

This fearsome machine beast! What happened to this big boy?

@Battleborn He stayed on the old hard drive, and I'm regular think about move it to new HD, but I constantly think that I will do it later
What a shame(

So how about this beauty man, I cannot wait much longer :'(

Still waiting for this big boy.