I give it a 10/10
I like the design, and if u put it in a server u should make it so u have to clear each room before advancing. Make it sort of an instance, where only one group/party can be on the map @ a time..
P.S. if u removed the stairs from the lobby and make a noter door on the other side u could connect this to LifeDeathCoffin .. if u know what door im talking about