Half-Life. Incident at Black Mesa

As a result of an experiment conducted at the "Black Mesa" research complex, a cascading resonance occurred, leading to an invasion of aliens from Xen. The wild fauna of Xen, which chaotically teleports into the complex, attacks the staff. In addition, as a result of overload, most of the equipment in the laboratories breaks down and the walls collapse. All scientific personnel are gathered for checks and interrogations to understand what happened and how to fight it. You are facing the task of closing the spatial rift between Earth and Xen. To do this, you need to launch a rocket into orbit, necessary for the operation of the displacement beacon, a device that should mitigate the consequences of the cascading resonance.