Dynamiter

(n.) One who uses dynamite; esp., one who uses it for the destruction of life and property.

Thesaurus Entries

annihilator, arsonist, biblioclast, bomber, burner, demolisher, destroyer, dynamitard, exterminator, hun, iconoclast, idol breaker, idoloclast, nihilist, ruiner, syndicalist, terrorist, vandal, wrecker