This was the last comment, and serves fine as a post to begin the next thread. The view out the tower arrow slit is as follows:
You can see the wall as it stretches and curves away towards the east--from where you are you can see the north gate to the left, and further along the wall, the mid-tower between the east and north gates.
You can also see the top of the wall, between the crenallations (the wall is topped by stone blocks and spaces between the blocks--standard appearance). You can count about sixteen slugs that would be on that part of the wall to the left of the door; probably more that are hidden.
The huge giant still bashing its fists against the tower has its front somewhat towards you. There is no "face"...what you can see, from a distance of perhaps 250 yards, are ten two-foot horns arranged vertically in two vertical lines, with a maw opening between them, the "lips" of which would be such that the mouth would open apart like a curtain rather than like a lid (as human mouths do). The creature has no visible eyes.
What do you do?