Chapter One: Owl's End
Kreo, Frack, Procz: I put one last wrap-up post in your thread before locking it. The transition here is probably still a little jarring, but I wanted to take advantage of the opportunity to get everyone together.
Veracity, in the moments before the crane smashed into the staircase, traced with a keen eye the intricate chain of belts, pulleys, and gears that drove the cranes. There! and there! she was able to point out to the others, including three newcomers who had just burst through the door. She could only hope they were allies. Her pointing purple finger indicated two critical cogs which, if bent or destroyed, should render the cranes inoperable.
Unfortunately, none of the others could act on the information quickly enough to spare poor Vecaal. The dangling cargo smashed into the stairs right where the dragonborn dangled, and none who saw the impact could help grimacing at the brutality of it.
To make matters worse, a second crane was converging on the staircase as well, ready to ram it next round.
That's a 20 to hit for 9 bludgeoning damage, and in case that's not good enough, Vecaal also has a -2 to AC due to his precarious position. Vecaal, you'll then have to make a DC 15 Athletics or Acrobatics check to maintain your grip. If you fail, you'll fall for 12 damage unless you use your action to fly, as we discussed.
Everyone else: Veracity has pointed out two gear trains that could be broken to shut down the cranes (she already failed an Investigation check to look for a way to control the cranes without breaking them, so I didn't include that in the result, but someone else could use an action to Investigate for this if they wanted). The nearer set of gears is 25' from the staircase. The further is 40'.
Kreo, Frack, and Procz have just entered and are 40' from the stairs or 60' from either of the attackable gears. I rolled initiative for the three of you, badly :-). So everyone can post actions now (including Veracity, for next round), and our order is:
Vecaal
Baern
Frack
Kreo
Procz
Veracity
Vecaal, I have you acting after the cranes because it's more convenient for me :-). But I also think it will be better for you, as you won't have wasted your movement if they do knock you off. I've been deliberately vague about the height of the stairs but I'll tell you now it's 100', so even a Dash action wouldn't get you to the top this round.