Another update...
The entrance seen from the vault door

From the inside looking out


A view of the robot service stations

An overlook of the current state of the build, as it is modular it can offcourse be assembled in many diffrent ways though

How to make the green toxic goo puddle
First glue sand to form the outline of the puddle, paint it in your choice of earth colour. First I gave the goo area a layer of PP Wurm Green, Then I started to mix in Vallejo game colour Livery green (GW bilious green I think) After that I gave it a coat of Vallejo transparent green and when it was almost dry I added Vallejo Stillwater swirled it around untill it covered all the areas I wanted and let it dry. (actually I was inpatient so I put it in the oven at 80 degrees C untill it cleared up ca 1-2 hours in a hot air oven).