Spoiler (click to show/hide):
18-15, success!
The orb, a hissing, boiling thing not unlike bubbling oil, strikes the first cart and it's explosive cargo, as well as it's operators with a large, heavy impact that sends venom spraying everywhere. Within moments the cart is visibly smoking and melting as apes rolling around on the ground, screaming and howling as they desperately attempt to get the stuff out of their eyes and hides! However, the second cart is allowed to fire it's payload, and does so, sending whirling, whistling missiles hurtling in your direction!
Spoiler (click to show/hide):
8-10, failure! 1 damage!
Your intelligent positioning allows you to avoid the vast majority of them, but one manages to land a glancing blow, scoring a mark on your side that stings sharply, if not deeply before the offending dart falls into the void below.
Your descent allows you to find a window near the bottom of the first floor along the right hand side of the building, allowing you to climb in quickly and take in the sights. It appears that you're in an abandoned storage room going by the cobwebs, the dust from your entrance is almost choking with it's thickness, and the low lighting makes the small chamber feel almost claustrophobic. At the end of the room is a narrow door made of smooth stone,a knob of brass on one side for easy opening and closing. Beyond that door, you'd find a hallway with a turn from right to left. To the right, you could hear angry, hushed muttering from what is likely a couple of the apes, as well as footsteps. You can hear something else to the left, a sort of distant, hard breathing, as well as feminine squeals and yelps.
Look, all I'm saying is that Batboy is our lord and savior.