Difficult map to run. I tried a lot of tricks but ultimately the fastest way ended up being playing the map more or less as intended. The requirement to kill the Knight and that there be no more than 4 creatures left puts some limits on what you can do.
I'm still not all clear and convinced on the choices of how I mapped this level. But I think my mistake is already in the beginning, not immediately constructing a library as well as a tile of lair, allowing for warlocks to enter. The first lock, is to get the research on Mistresses, Vampires and Lightning. Of that I am convinced. And for that Warlocks and Dragons are key. Meanwhile as they are researching, ideally I'd possess dragons and skeletons to clear the small rooms, which aren't connected to the main chamber. Because the first soft lock is to kill all but 4 creatures, there's a certain timing to it, not to do it too early as the last wave will run you over. There are a lot of mistakes but generally I am happy with finally being able to present this run.