Did I get the calculations about g-forces correct, the ones under the “Physical durability” section?

@DavidConrad I didn’t actually know the correct spelling of “Et cetera” and apparently, not the correct abbreviation either.

Something tells me that you don’t really understand how fast Mach 30 is. Mach 1, or the speed of sound, is approximately 767.269 miles per hour. Mach 30 is approximately 23,018.074 miles per hour. For context, the fastest man made object, which the Parker solar probe (and NOT that one manhole cover) has reached a top speed of 394,736 miles per hour., or roughly 17.15 times Mach 30. With that in mind, how badly do need/want your character to move at that speed?

Depends. If it’s “magical” or “supernatural” knock-out gas, then no. But if it’s solely based upon chemistry/science, or at least suspension-of disbelief-able chemistry/science, then yes, it would be.

@FrançoisJurain You posted this comment without actually reading the question…?

@JBH 1. This question isn’t about a specific universe, it’s just about the Sci-fi as a genre. 2. I didn’t post this question to steal people’s ideas to get around writers block. I’m better than that. 3. I sort of understand your third point, but the question isn’t focused solely Warhammer 40K, or any other specific sci-fi worldbuilding project. If I wanted ask specifically about 40K, or any other particular universe, I’d go to a site that’s dedicated to discussion about them.

@Hokon I get what you mean (especially after realizing that a galaxy is just a bunch of solar systems orbiting a supermassive black hole) but at some point, a line has to be drawn between “orbiting a black hole from 100,000,000 miles away”(is that even far enough to prevent being sucked in???) and “floating in interstellar space.”

The technology level of the civilization is entirely irrelevant; The question isn’t how can a medieval civilization can exist on a planet orbiting a black hole. It’s how any civilization can exist on a planet orbiting a black hole. As far as I understand, an object doesn’t orbit a black hole; It gets sucked into it.(Also, you spelled “Medieval” wrong.)

@RLoopy Given the weight of the sword itself, and the force that a well-drilled soldier could put behind a thrust, I’d confidently say that a sword of that design would still be effective when on foot. Cavalry isn’t strictly necessary here, it’s just how those swords were used in the real world. Speaking mathematically, thrusting attacks are also “easier” than slashing, because the point of contact between the blade and the target is smaller, meaning more pounds of force per square inch.

I should have mentioned chemical warfare in my answer, or wrote a separate one. That’s an AMAZING idea.

@GaultDrakkor The question says specifically, “…if you intentionally do violence to someone and some of that person's blood gets on your person (including what you're wearing)…” the emphasis being mine. I interpret this as meaning you only go insane if the blood of someone that you intentionally harm makes contact with you. That, should, mean that if some random guy pours a flask of blood from some other random guy onto your arm, you will be fine.

Yeah, let’s all stand in an open field, in rows, and take turns shooting at each other. Like that would ever happen— wait a minute… en.m.wikipedia.org/wiki/Line_(formation)

@Perkins Fair enough; that all makes sense.