As usual, some blank for spoilers (well, should these even count?)
That's hardly what I meant, to be honest. I have no idea how you comprehend my words but meh.
So at the very first beginning, this is just some sort of plot outlines, rather than the whole scene. You could have some more reasonable story goings but it's not like I'm actually writing a fan-story, not here at least.
And I have never said the denotation should be done by "Dave charge at Mephis". If the remote denotator is working, then that is just the easiest way. They can hide somewhere safe enough and denotate it from distance when Mephis is close enough. If the remote denotator is not working, then Benson still have the gun! Why not trying to denotate it by shooting them? Again, these are just possible solutions. Chances are that Mephis could also have some backup measures.
(PS: While Google says C4 can withstand a rifle shot, I think it's not that much a problem. Like, hardly anybody would question about such scientific problems in these stories. )
I don't know how you get the "kamikaze idea", but yeah, I also agree that's pretty stupid and absurd.
This idea came to me because, across every storyline (at least for those which I've played), this F storyline seems to be most likely for them to have a bite back on Mephis, which neither negotiation or some police force will do. And those bombs being simply disamred seems kind of wasted to me. Thanatos have all past memories! If keeping Dave alive is one important task for him, why not utilizing him to the most? You can know how many bombs there are (though he could be lying). You can know which direction Mephis will come to the house. You can even know whether you've tried this plan and how it turns out.