This week we have the basement of the King’s Own Brewery, a three part mapset. This one is a bit particular, in my game players were pinned down on the first floor by enemies on the upper gallery. When an explosion opened up the wall, more enemies poured out and players had to go on the defensive. Finally, the roof collapses in from yet another explosion, turning the middle of the field into a rough-terrain area perfect for a boss monster.
This is another map where a rollable table in Roll20 can be a huge time saver and make using these maps all the better for the GM on the go.