Kill House Grey Box - Level Design Concept.

I have an interest in first-person shooters and I put together this basic design for a kill house level in a military shooter. This Level would allow the player to test their weapons in a time trial-style obstacle course involving hostage rescue. I would like to further explore the incorporation and use of VR not only from a game perspective but in regard to training software for military and emergency services. Allowing for the safe practice of specific scenarios and communication techniques.