Each person strikes at the same time, and the slivers of light erupt over the Old One. The lights completely wrap around the Old one and then suddenly shift, cutting the Old One in half and severing it from the well. The Old One's body falls over onto an undamaged section of the platform as strands of dead hair.
The light elemental speaks "This is my power, The 99 paths of light, that instantly kills anything that is struck by the correct quota. I have been one of many charged with keeping this Old One's power in check. While the real Old One sleeps far below, its power builds up and is released into the thing you just fought."
The light elemental jumps across to the opposite platform from where the group entered. Pressing his shield to the door, the light elemental causes the wall to cave in. "This will take you to your destination as I promised" A white portal opens behind the elemental "Until we meet again heroes" and he left.
The opening in the wall leads to a large courtyard that leads to the portal, and is surprisingly close to the group's destination despite the direction they traveled to get to the Old One.
Romans 8:31 What, then, shall we say in response to this? If God is for us, who can be against us?
1 Corinthians 13:1-3 If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.