Interesting premise, but since I am a history buff I hate the absolute shit out of it. The author is using modern things implemented in a (very inaccurate) historical setting. If you are going to use a dark premise, then use it!
First and foremost: Trial by combat ("Judicial Duel") was phased out by the 16th century. This is set in the early 17th century
The second chapter contains a syringe. Those things were around AFTER the Holy Roman Empire collapsed. It also contains a fucking vise (a clamp or bench vise). The vise that you see in the second chapter simply did not exist at this time in the way shown. If there was a vise used in the early 1700s, it was radial so whatever it was clamping had a tilt. Additionally, it did not have a little twirly rod that went through a hole, that would require machine tools.
On duels: They are duels, not judicial duels. They were about HONOR, not JUSTICE.
Also: bandits are gonna rape women. Knights are gonna rape women. Its the medieval ages, if a bandit attacks a caravan, then they are raping any women. It was actually that common.
Also: bandits are not gonna duel you.
You think a woman was allowed to be a judge in the HRE, let alone a little girl? Gunther would be dead by infection. The priest would not give a single damn over who this girl was. Why? Because the pope was just as corrupt, if not more. Plus, her little pocket watch would mean absolute dogshit to anybody anywhere because it is purely of the author's invention.
Illegal Gunpowder in the early 1600s? Did the HRE outlaw personal usage of it, because that just sounds fake.
Wolf-Dude's limbs are unrealistic. Possible today, yeah, but because of precision machining. In order for his body weight to be supported by whatever he has, it would have to lock in place and be able to rotate. Image having a bar that spins along its middle, then imagine holding this bar at the middle on the axle to support half your weight. You would fall over within seconds.
Who comes up with this shit?