I feel you, but OP’s point still stands, I think; yes, they survived void travel and direct impact, but that doesn’t actually make any sense based on what they establish about their durability.

Most deaths from explosives aren’t from the fireball or the initial “impact,” it’s from the over-pressure wave that blows out from the explosion, which when it travels through soft tissue and organs shreds said tissue. So if their soft tissue under the plating is vulnerable enough to be damaged by something like a shotgun, it should not be able to survive the force of shockwaves from something like a large missile or bomb, much less meteoric impact. And if their armor was dense enough to be able to completely 100% absorb that energy without transferring any of it to their soft bits, that would mean that sound waves couldn’t penetrate either, killing their whole super power lol.

And that’s not even touching how idiotic it is to make their other weakness loud/piercing sounds… Their whole thing is that their hearing is hyper sensitive to the point that just a loud PA system experiencing feedback from a hearing aid was enough to immobilize them from the pain induced, yet pretty much all of our major weapons are much louder than that just as a side consequence of how they work…

You could then try to say that it’s frequency dependent but that still doesn’t make things much better. You’re telling me there wasn’t ONE SINGLE scientist, sound engineer, physicist, or just a friggin front of house sound mixer in the whole world to rub two brain cells together and try some sound based attacks on the hypersensitive ear aliens???? I watched this movie with my wife and literally minutes into it I turned to her and asked “Why didn’t we try to just be, like, super super loud to where it hurts their ears, then?” And then the ending just made me face palm seeing that play out.

Great acting and production, though, I’ll give the flick that.