Again, great scenarios.
I like how you have transitioned from outdoors to inside the tower (I would love to have an enormous tower with levels that could be lifted off to show the interior, but your system is far more practical).
In an earlier scenario you had a mechanism of having no more enemies appearing after rolling 20 ten times. This would leave me playing for hours with my dice rolling!! I use an extra scenario card, discarding each scenario card after it is drawn. Once the third is drawn there are no further creatures.
I might just be inspired to play a game - the first in several months