(I apologize in advance if my post seems a bit disjointed and confusing.
I like that you made the assassin's (the black one) hand (in the portrait) more readable. I just noticed that the bottom was cut off
Replace the armored bandit's club with an electric guitar
Seriously though, he looks like he would not hesitate to bop me over the head if I cause any trouble. The two biggest problems I see are his straps and his right shoulder piece. The straps don't connect, and even if they did, they would be different, and if you look closely the shoulder piece looks slapped on. Not sure why; maybe it's the angle, or the lighting. But other than that it's quite decent!
The warden.png portrait seems to be a cross between the ranger and the lady outlaw (Jessica) from TRoW (I am referring to the first one, as apparently you posted again as I was writing this
Out of curiosity, where did you grab the body from?
The only problems; the green piece hanging from her shoulders seems cut off due to the way the original was drawn. You could probably cut it out entirely, leaving only the mask, unless it's covering parts the body doesn't, and you would get transparency?
That and a bit of detail on the strap is cut out because of said shoulder-piece.
(Ah, I just noticed the body needs some line-work to make it fit with the rest of the portrait better.)
Minor points that just need a slight touch.
The Exterminator blends together quite well! Though the slight build of the orcish assassin does not quite match the head, and some of the lines on the swords are a bit ragged. It shouldn't be too hard to go in and ink them. (Unless you meant them to be serrated
You say your specialty is quantity not quality? I think your quality does not suffer despite that. (And quantity at this quality is better than a few jaw-dropping portraits with nothing else.)