Complete the indicated task to unlock the achievement.

Achievement	How to unlock
"You. Black Mesa"	Reunite old foes.
A Place in the Record Books	Heroically listen to the entirety of the Following Portents commentary.
Big Mama	Survive the gonarch.
Literacy 101	Finish Following Portents.
Moore Than Enough	Finish The Charnel House.
Reckless Abandon	Disembark from the church.
So There's Eleven	Find the kidnapped children.
Speed Run	"Beat" Half-Life in record time.
The Last Order	Discover Operation Exodus.
VACANCIES	Check-in at the Franklin Motel.
Vort Rider	Escape the antlion horde... on horseback!