Look around to see what everyone else is doing. If they're attacking the big creature, join in and attack it. If they're running away from it or moving away from it, follow them. If they're faffing about, set the big creature on fire. Then happily proceed past it, down the stairs, burning it as I go. (Don't forget about the fighting big creatures specialty.)
Let's see, Valen is slowly approaching in his wheeled cart, the wheels doing the same thunk thunk as they drop down stairs. Not really faffing. more cautious inspection
Rex is flying his cart pretty much right at you, while Kongor and Gak remain behind, their carts flight ready. It's about fifty fifty on 'faffing' vs action right now.
So, where are you going to aim your fire? Aiming at the end of the hundred foot tentacles, where the rubble is being dragged inward? Aiming at the middle of one of the giant tentacles, several hundred yards directly ahead? gonna charge in and find out if this thing has an actual body and fire at that? Or are you going to start at one end and just try to burn everything?
Slowly move down to check out the crashing noise
Your cart clunks down the wide stairs, rattling your teeth as each wheel hits the stair below. Your making a lot of noise, but not nearly as much as that giant pile of rubble being dragged across the concourse several hundred yards down. Dragged, I might add, by tentacles the size of rivers.
Help Fredderick with his cart and investigate the tentacle creature. Does it look sentient?
SO you fly down toward Freddie. Right now, he seems in control of his cart. He looks back at you, and at the others then ahead at the tentacles with an eager expression and a snort of his nostrils. You look at the tentacles (1) but your thoughts go mostly to Gak's theme park, which he begins detailing in rather absurd detail.
Attempt to determine how much a threat the tentacle thing could be, and observe it's movements
You determine that, holy shit! that thing could eat the whole party by accident. It seems slow, from this far off, but slow is relative, and the tentacles are HUGE.
You noticea central pod, around which the tentacles move. the pod seems mostly stationary, but it is evident that it has moved over time - away from the giant hole in teh planet, across the councourses. That is, sideways in relation to your destination.
"Hey guys? ... maybe we could ... go around?"
"Giant tentacles already? Just like some of the racier theme parks I've been to."
Does our path lie behind the tentacle creature? If so, let's start figuring a way around the bugger. Flying over it, mayhaps? Or just wait for it to go away if the rest of the group seems inclined to do that.
Well, your path lies behind the tentacle monster, yes. But only in general. You could easily travel along the concourse you are on for oh, say five hundred yards and be potentially out of reach of the thing before heading down again. Flying should be easy enough - there's plenty of air, and unless the thing likes to jump, or has wings you don't know about, or it's arms stretch like rubber, going over would be a relatively simple affair. Less practically, you could turn around, and head down a flight of stairs into darkness behind you, then try to make your way around underneath the thing. If you waited for the thing to go away, it might take a few weeks, depending on how much it eats, or what other hobbies it might have. You wonder if it might invite some fiends for a themed "role play" session. A session you begin describing in detail to Rex, and anyone else who would listen.