Follow monolith call

 is an optional storyline task that is assigned in the S.T.A.L.K.E.R.: Lost Alpha standalone mod and will lead to the "bad" Endings.

Overview

 * The mission is spawned when the player walks up the stairwell as part of the Restore power in control room mission.
 * Both missions will run in parallel.
 * Reaching the Wish Granter concludes the mission and the game.
 * There will be no opportunity to enter Freeplay.

Trivia

 * Leaving the Sarcophagus before completing this mission irreversibly fails the mission.