They're so... fragile

"Take advantage of the mortality of Zombies in L'Étranger."

- Achievement description

They're so... fragile is an achievement in the Zombies map L'Étranger. It requires the player to kill a Zombie with the Zeit-Beschleuniger, causing them to explode upon being touched.

Trivia

 * They're so... fragile is a reference to Gears of War 3, in which Queen Myrrah says the same quote upon getting an explosive kill.