If a superhuman was a thousand times more durable than a normal man what type of military weaponry would be necessary to hurt or kill them (Artillery, missiles, cannons etc)?
What’s the most powerful military weapon they could feasibly survive?
What else could “1000 times more durable” mean, other than “it takes 1000 times as much energy”?
I think an A bomb will probably do the trick
Well a tank is probably 1000x more durable than a normal human. And to kill a tank:
High powered rifles can fire large bullets at high speed that are said to be able to penetrate an engine block from a car. Even a human that is 1000 times more ‘durable’ than normal might be harmed or even killed by such a bullet. It depends on what 1000 times more ‘durable’ means. A bullet like that will certainly harm a human if it can penetrate just 1 inch into the body. Could such a bullet pass through 84 feet of ballistics gel? I don’t have any idea.
ETA: This Quora answer says a 50 caliber bullet can penetrate 32 inches of ballistics gel. However, that doesn’t sound like something that could penetrate an engine block.
Durable inside and out, or just the exterior?
Kryptonite.
Inside and out.
Define “durable”.
In The Preacher comic, they try killing a demonic assassin-type character with a nuclear missile. Doesn’t work. Ironically, the religious organization failed to realize that he, not being a normal flesh-and-blood guy, is not vulnerable to physical damage. Like those D&D characters that can only be wounded by magical weapons.
What you need in situations like that is some sort of Brahmāstra.
You need to make sure not to blast an ordinary human with one of those, though. It would be bad.
There’s a difference between penetrating 32 inches of ballistics gel and penetrating 1 inch of a material that’s 32 times more “durable” than ballistics gel.
Mythbusters tried firing various weapons into water, which is even less “durable” than ballistics gel. The low energy handgun rounds went a few feet. The more energetic rounds actually penetrated less. The .50 BMG round caused a huge splash, and apparently didn’t penetrate the water at all. They only found fragments of it at the bottom of the pool - instead of penetrating the water, it simply disintegrated on impact.
A .50 BMG round absolutely can penetrate steel, even light vehicle armor, and rifles in that caliber are used by the U.S. military as anti-materiel rifles, including to disable vehicle engines.
If the target is 1,000 times as large as a human, a .50 BMG round probably won’t do anything useful. If the target is a normal human-sized superhuman that’s 1,000 times as “durable”, I suspect a .50 BMG round would be useful, but probably wouldn’t achieve a kill.
A 9mm bullet typically has about 600 j of energy if we need to impart 1000 times that amount of energy we’re looking at 600 kj of energy most of the 50 cal bullets I found ran around 18 kj of energy so not nearly enough. An F1 grenade runs about 250kj so about half what we need. I can’t find good numbers for various sape charges but I think we be in that range or a shoulder propelled rocket to get to 600kj.
While you could kill them with the rocket it would be alot about location and they could walk away from a misplaced shot.
Nuke them from orbit, it’s the only way to be sure 
Brian
I don’t think we’d have to resort to nuking the [whatever]; anti-tank weapons ought to do the trick.
The M829A3 version of the U.S. M829 round (which is an “armor-piercing fin-stabilized discarding sabot long dart penetrator” designed to be shot by tanks at other tanks) has (according to Wikipedia) a muzzle energy of 12.1 megajoules (or 8.9 million foot-pounds). It doesn’t explode or anything; it’s just a two-and-a-half-foot-long, twenty-two-pound dart that comes at you at 3,500 MPH (and is made of depleted uranium, which is both super-dense, and also tends to catch on fire when you shoot it through the armor of a tank—hard to say if that last property would apply to our [whatever] that’s “1,000x more durable than a human”).
If we somewhat simple-mindedly just divide 12,100,000 joules (or 8,900,000 foot-pounds) by one thousand we wind up with 12,100 J / 8,900 ft-lb. So, relative to the [whatever] we could sort of expect a modern anti-tank round to be equivalent to a .700 Nitro Express compared to a standard human. To give you an idea of what that likely means for the [whatever], the .700 Nitro Express is a round designed to be shot from the sort of rifles that are usually referred to as “elephant guns”.
Something with 1000x more kinetic energy than a handgun. A 380 acp has about 270 Joules of energy, so in theory you need something with 270,000 joules of energy. A few well placed 380 shots will kill a human, so something 1000x times stronger will kill something 1000x more durable.
A 50 caliber BMG has about 20,000 so that won’t do it. An anti-tank rifle has about 50,000 Joules. Thats about 1000 times stronger than a BB gun. A BB gun won’t kill you, but it’ll hurt and scare you off.
A tank round has 3 million joules of energy, more than enough.
If you want 270,000 Joules of energy (1000x more KE than a 380 ACP handgun), you need a 1kg projectile flying at ~750m/s, or a 1/2kg projectile at around 1100m/s. That should be fairly portable for a person or a small squad. That sounds like a fairly small cannon, I believe napoleonic cannons fired shells about 5kg.
Looking online, this is the size of a cannon firing 1kg shells in the civil war. Fairly portable.
Or you could just hit them with your car. That would probably do a lot of damage.
Whatever you do, “He’ll be back”.
A giant John Wilkes Booth
Ditka.
Don’t be the lame guy. Don’t just throw up a link to a video. That is not an answer. It’s not clever or amusing no matter how brilliant the actual video is. IT IS ACTIVELY FOSTERING IGNORANCE, not fighting it.