Penetration and Liquidation mod for Half-Life 2

Now it is brief about a story: After events which comes to an end Half-Life 2, G-Man (On my version it is the agent of the confidential governmental organization created for struggle against external threat) immerses Gordon Freeman in stasis. After a while it again wakens his for new very much responsible job. The target of this mission is penetration in Combine world and liquidate their leader which is the general brain center of this race. Under its control and a management are all field of activity the Combine, so after loss of the leader the further existence and evolution alien civilizations becomes impossible. For realization of this purpose it is necessary to get into a City 18, penetrate in citadel and use teleport in the Combine World. First Penetration terminates in moment of this teleportation, so Penetration and Liquidation will begin already after the arrival in other world...