Are they one use?
I'm confused with this and double agent.

Was planning on checking with future look, but thought I'll ask while I was posting on the forums.

I believe the Martyr blows everything up and is unaffected by other specialists.

Can they be used again?
From what I am getting, they die after that blast?

That's right. They blow up everything within a radius, including themselves.

As for being unaffected by other specialists, check their combat priority. Any specialists with higher priority (meaning, lower number) will apply their abilities before.

Thanks.
And you are going to have a lot of players like me having different interpretations for normal English sentences, lol.
I mean I haven't heard of a living martyr, but still wanted to make sure.

Btw, nice decision not calling it a jihadi, though that would have been clearer (?).. But too risque, I guess.
I'm sure that must have been discussed.

it was never discussed. we are intentionally working against stereotypes with the character design in this game.

Yes, it's impossible to describe them exactly in a couple English sentences. That's one of the reasons for the tactical puzzles. And even in a game, you can always hire one, do stuff with it, and see what it does in the future. And if you don't like it, cancel the hire. So we're hoping most people get the details of the behavior of the specialists by trying it (or seeing them used against them )