[X] Kill it with fire! (Or in this case hurt and annoy it with fire, and hopefully smoke it out, but the point stands...)
-[X] "If the creature lives, then it must breath. Rather than follow it into a sure ambush, we can first attempt to smoke it out. If we are lucky, perhaps it will succumb to smoke and flame, and none here will need to risk themselves against the monster."
--[X] Order the House Koire guards to retrieve as much cooking and lamp oil (or whatever flammable liquid they have at hand) as they can quickly gather, along with old rags, rope, and other kindling. Whatever is available in nearby outbuildings, workshops, the newer kitchen, etc.
---[X] While the Koire guards go about their task, order the Temple soldiers to form groups to guard the other two exits, and ask one or more Hunters to accompany each group. The creature might not be ready to flee yet, but that could soon change.
----[X] Once the flammable materials are gathered, have them made into three large bundles of oil-soaked rags, kindling, rope, etc. using Zaia's guidance on how to best create thick, choking smoke. Zaia will contribute a vial of Alchemist's Fire and a Smokestick to each large bundle for added effect. If there are any barrels available to hold the bundles, they would be ideal for this purpose. Smaller bundles will be made if there are enough materials, suitable for throwing through the building's windows, if it has them.
-----[X] The pyrotechnics will then be lit aflame and pushed, rolled, or tossed through each exit/doorway, along with thrown through any suitable windows.
-[X] If necessary, Inge will use her Drench cantrip to deal with any fires that look like they might spread beyond the old kitchen building, while the gathered guards, soldiers, Hunters, and our group stand watch for an escape attempt by the Beast.
--[X] Everyone will be instructed to remain vigilant for possible Mind-Affecting effects being used against them or their fellows. The cornered Beast is not the only threat loose upon the grounds, after all.