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!
The poster on the left is way to large and stretched.. Scale it down a bit move it up and perhaps add a larger frame around it.
Eventually add a 2nd light right next to the poster. So that 2 lights are shining at the poster.. It will probably look better that way.
Due to the fact that the player can see parts of the building on the top middle outside I would add some more things for that area. I believe a Flag Pole with a Blackmesa Logo Flag could be pretty nice there. That gives the player the illusion that the facilitiy also continues outside.
As side of that nice work. :)
Actualy its nice.