Take some further steps back into the corridor.

You take another few steps back into the corridor, readying a javelin. The spider just stays on the ceiling, spinning a web.

If the spider does not come after us, throw javelins until it does, or retreats.

You light and hurl the javelin with gargantuan force, missing the spider but causing the web it was spinning to shrivel up. It stops and looks at you for a moment, then starts crawling towards you, still sticking to the ceiling.

If the spider comes after us, prepare our flaming spear. Stop it from getting on top of us with our flaming spear. Go for the eyes if we can.

like the noob it is, the spider sticks to the roof, prepare duel flaming javelins of doom. When it gets in range, like the bad ass you are, you  scream "ITS COMMING RIGHT FOR US" before slinging your javelins.

your first one breaks of on its exoskelecton, where as your second one manages to stick in to some degree and making its fur/hair... who the hell cares at his point. The point is the fucker caught alight and has backed off.It burns some of its skin and creates big ass pussy burns. Didnt know spiders could screech that loud.

As it comes close enough to hit reliably with your javelin, you scream, "IT'S COMING RIGHT FOR US!" and sling another two javelins. They streak through the air, leaving twin blazing trails. One bounces off, singing the spider's hairs. The other bounces off the ceiling and hits the spider's belly (or equivalent substitute). The spider is burning and disoriented.

Light 2 more javs and press on the attack while its back peddling.

As it flails around in pain, you light another two javelins. Throwing them, you remove two of its legs. With only five functional legs, it can no longer support its own weight on the ceiling, and falls. You walk up to it and stab it a few times with your spear to make sure it's really dead.

You have gained a skill point.

[Your badassery has receded and your ankle really hurts.]

What do you do?