Dame i misread it. That's even worse than what I originally thought.

You are also an arm chair specialist too you moron, saying oh it has this and it can do that.
You completely ignore the fact that the monsters have a goal, go after the humans, the humans that have already started to evacuate upwards. Like you said in the next chapter they planned to set up a breaching charge to catch the monster off guard, just set up some explosives traps and have someone manually trigger it, or set some up in places you know have been evacuated.
Its a fucking apartment building, it's not like there's a million ways to go up.
Oh it can dig though walls? Well then you can hear it coming, so you set up in the general area. Also the walls between the rooms and to the outside are usually not concrete, i don't think they have been shown to dig though solid concrete with any speed, only crashing into the edge of a wall or pillar.

I guess it depends on what is inside that box, but that glass isn't going to full block it.

This isn't even its final form

If he is so scared of the things being radioactive, then why is he standing behind a thin glass window.

Says she will restrict herself to one gift, runs away at the end saying she will come back with more gifts.
OK then

Oh they finally started using armor piercing rounds that work.
I'm also guessing these monsters are like some pacific rim type kaiju, sent over to attack the planet or something.

Messing with any of that gets really convoluted really fast.

You are the one who didn't fucking read, they stated that the monsters chase people who have already been bitten and used that to their advantage before. The monster also reacts to sound, another trait that can be exploited.
You are also telling me that the special forces don't have the resources to bring things designed to pierce heavy armor because of their lack of abundance? Piss off with that bs. You know full well what that monster is after, all you have to do is block it's path.

Now how will they take that progress away.

We already have flat. The censored box.

It's been 123 chapters and he still can't have a conversation normally, what makes you think he has any tolerance to that stuff. 🤣

Blueballed an entire tribe because he couldn't get any himself. Tsktsk Diablo

What are you on? Do you think something that big can swim several kilometers without triggering whatever detection system they bragged about?
If it is do unknown then they should be on high alert, more so when they are entering territory of a monster. They got caught unaware by giant squids and something the size of a whale.

If it is only going after things to eat, then they should be fine, it's not worth the energy for something that big to go after a small person for food.

Probably plot reasons. Like how MC is doing this all for himself, even though it could possibly get tons of innocent people killed

They suck off MC too hard, they will listen to him.

And indirect hit and it still pierced the box, what kinda of magic is this.

So this new thing just one shot a monster that can shrug off anti tank rounds. OK then

Did you forget that this is what that girl is into.