The Cellar (P.A.C.H)

This is the cellar, not too artsy but it serves a purpose. Its for a point and click survival horror titled Project P.A.C.H.

The bricks are each individually modeled uv and normal mapped aswell as the floor tiles. The reason I posted this is because I am very new, and do not know alot about the system, How would i go about adding a dusty dead feel to the room? Whether it be a plugin, an internal feature whatever, just tell me what you would do to make the room feel alot creepier (not make it darker:p )

thank u

Nobody wants to help :confused