Quotes: One-Hit Kill

Nu: From beyond the realm of souls and birth, I call upon the ur-sword to bring ruin upon my enemies. Perish.
Announcer: ASTRAL FINISH!
What just happened?
... why am I dead?
ELotH:TES, "This Gear Is Striking So Fast You Can't Even See It"

Surprise! You're Dead! (hahaha)
- Faith No More, Song of the same name

"They say the best weapon is one you never have to fire. I respectfully disagree. I prefer the weapon you only have to fire once."
Tony Stark, Iron Man

"If the game isn't over by turn four, something is VERY WRONG."
Edo Hrzic, on the "Devil Franken"note  deck archetype, before there was much available to counter it

"Boom! One hit, and three-thirds of your HP are gone!"
Kenny, Divekick

What's the point of a life bar, if most of the enemies kill you in one hit?
The Angry Video Game Nerd on the NES adaptation of Dragons Lair

''One shot, one kill
No luck, pure skill''
—A poem by unknown

Maybe I could take Gregor Clegane, dance around until he's so tired of hacking at me, he dropped his sword, get him off his feet somehow. But one misstep, and I'm dead.
Bronn, Game of Thrones