You are Gordon Freeman... It was a normal working day. Scattered Xen aliens were hiding even in the rear corners of the Black Mesa research facility. It slowly return normality in everyday work. The old not been destroyed buildings have been modernized slowly. You return from a normal disposal order, as in parts of the institution the power goes out. Power generators to keep running on the main equipment and and your mission is to restore the energy supply. On the half way you notice more and more Xen returnes to Black Mesa and the military is back ... Uncover a new, exciting plot in the Half-Life universe!
Not sure add some more signs in that section.. Blackmesa was full of all kinds of information and warning signs... The wall to the left looks a bit empty.
Again some more lights would be good I guess. If you want it to be dark make the lights damaged or off. But at least let em be there.. That way it looks more complete.