It's fully destructible, there are some slight exceptions, with the insulated wire, battery and other metals needing more heat to melt (1500C). I've had a lot of trouble with heat though, the massive amount of uranium caused even a tiny bit of pressure (0.02) to cause the temperature to rise which then conducted up onto the wax people..
The lower left metal part is supposed to be a cliffside survivors settlement as the area above is highly polluted, I'm still building it so I'll probably have to make the main walls 2px thick and the extras 1px.
The lower right part leading to that green room thing has a security feature, if the blast door is heated it then conducts that heat along a glass wire to a glass cap located under that big water container in the roof. When the water is heated above its boiling point it then turns into steam, which also creates pressure in the container followed by the glass cap breaking and the water pouring into the green liquid, the green liquid is at around 9700C. When the water hits it, it instantly turns to superheated steam capable of burning through metal, it also cools down as soon as it touches the roof causing it to fall to down to the ground again and starting the entire progress again. There is also another container of concrete which pours down when the water touches the rubidium trigger