Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Ace Pilot	Shoot down at least five enemy aeros.
Betrayer	Betray Wesh.
City of Industry	End the game with Actorius Technology 80 or higher.
City of Lights	End the game with Actorius Grandeur 80 or higher.
Dangerous Liaisons	Romance the Quon Bexi spy.
Double-Cross	Double-cross your father after betraying Wesh.
Engine Slayer	Destroy at least three Deep Tech creatures.
Everyone Lives	The Air Guard captain, the Quon Bexi spy, the revolutionary, and the machine-girl all survive to the end of the game.
Ghost of the Skies	Maintain an impenetrable cover identity.
Glorious Revolution	End the game with Revolutionary Character 80 or higher.
Gossamer Pilot	Fly the Gossamer.
Honorable Authority	End the game with Combine Character 80 or higher.
Learned Your Lesson	Only crash once.
Love Among the Rheostats	Romance the machine-girl.
Love and Loyalty	Romance the Air Guard captain.
Reprogrammer	Reprogram an automaton.
Revolutionary Act	Romance the revolutionary.
Secret Garden	Find the Iridium Garden.
Spot the Spy	Identify Lectini as the Quon Bexi spy.
State of the Art	Reach 75 Empyrean at any time.
Still Flying	End the game with the Empyrean in your possession.
The Great Unification	Unify the Combines and the revolutionaries.
Wing Dancer	Fight a sword duel on the wing of an aero.