Arson jokes are stale and always have the same punchline. They can be funny if done right, but not in the way you use them. Also you make arson jokes far too frequently, furthering their staleness
The reason why I hate this level is that it's poorly written, a mall that gets hotter/colder isn't a good concept, oh, and we also have to have the mass number of entities because it's a dead zone level, you see why it's poorly written?