The Final Countdown

 is a secret achievement/trophy in Deus Ex: Human Revolution.

To unlock this achievement, the player must convince Hugh Darrow to hand over the Hyron deactivation codes at Panchaea.

Walkthrough
He'll start a monologue, and the dialogue afterwards offers 3 options. Choose critique, extrapolate, extrapolate, extrapolate again. Darrow will give a monologue again and then give up the codes, the achievement should be unlocked.

If you have the Social Enhancer you can pick critique, critique, then use the pheromones and pressure option on his omega personality type.


 * Note: the correct sequence of dialogue options varies. The key is to point out that his opposition to augmentation is based on jealousy, because his own body rejects augmentations, and he therefore thinks this is something men were not "meant" to have - since he can't have it. A mix of critique and extrapolate choices seems to work, but not always in the same sequence.