Troubles in Paradise

Yusko flails his arms trying to push the creature in front of him again.  Less accuracy and more spray and pray.

Attack: 21 Damage: Unable to parse dice roll.

Attack: 24 Damage: 6

Bonus action Attack: 19 Damage: 10

Davis strikes at the sharkman. (I have rolled the below straight, assuming the sharkman is blind in this, as Davis is blind, so advantage and disadvantage cancel out. If that is not the case, then I will add a disadvantage roll at the very bottom of this post and you can take which ever is less.)

Attack: 24 Damage: 15
Attack: 17 Damage: 8

He uses his bonus action to activate his Hill Rune.

Disadvantage rolles, if needed...
Attack 1: 13
Attack 2: 15

The craking of the bones and splashing sounds of blades and fists hacking and punching into the flesh filled the dead silence of the room covered by the cloud of darkness. Somewhere inside that darkness, the body of the shark-headed creature went down leaving behind thin swirling streams of blue blood.

Interestingly enough, the monstrous women behind the wall at the end of the room and the cylinder of the moonlight at the entrance to this part did not do anything again. Not that anyone could see it, of course.

(To remind the disposition - the room is a hundred feet high, the half-walls at the end are 40-50ft high, not touching the ceiling. Everyone is in the cloud of darkness closer to the opposite wall.)

Hansel!

Then Nameless and Trudie next round.

(FYI, not sure why you have Nameless at 40hps. The last damage I saw was the thunder damage, which took her to 51 I think.  Lemme known if I missed something!) 

(Post 315: "S1 vs Nameless Attack: 21 Damage: 11" did it miss for some reason?)

(i thought that, plus thunder, put her at 51, which i stated in post 316)

Before thunder damage, she was at 62. Thunder was 11 (half of 23) - 51, then 11 from attack - 40. What am I missing?)

(Nothing, my mistake, I've adjusted her HPs down to 40.) 

Hansel casts Mass Cure Wounds at 5th level, healing all members of the party for 20 HP.

He then moves north out of the darkness, angling to the left until he (hopefully) gets a view of H1.

If he does, he will use a bonus action to move the spiritual whip and attack H1 again. Attack: 17 Damage: 4 (Extra roll if advantage/disadvantage: 16)

Let's say Darkness does not interfere with Mass healing.

Once Hansel was out of the dark, he found out that he need to move his spiritual weapon quite a bit - H1, looking less hurt, by the way, was at the top of the half-wall, obviously intending to get around the moonlight, blocking the exit. The warped woman could not avoid the whiplash giving the owner a heavy look.

Math (adjusted):

Map

 Round 4

Nameless and Trudie!

Nameless one continues to try and get out of the net. 19 vs DC 13. 

Finally managing to scramble out of the net, she shrugs it aside and moves to her right, a hand out, seeking the edge of the darkness. If she finds a wall, she'll move forward along the wall as far as she can or until she's out of the darkness. She ends up at K9. 

Even if the Nameless One could not see, the guiding coral wall was in the arm's reach. She got herself out of the cloud of complete blackness and could see some commotion behind the upper part of the northern wall.

Trudie!

Inhaling a freshened breath, Trudie would follow her nose. She caught waft of a familiar poofy scent swim near enough to orient her in a direction. The old tort would swim north, edging her moonbeam to settle atop H1.

Movement: To H4, readying for a potential AoO if Peeping Tom decides to use his peak and seek tactic?

Action: Moving Moonbeam west onto foe H1

It was a brave move to go so close to the wall with an invisible enemy behind, but Trudie did it for the sake of precise movement of her burning light higher covering the hurt tentacled woman again.  ((I'll use the old damage, but feel free to roll again))

H1 Con save DC16: 9

The humanoid squid darted away from the light and the weapon, over the wall and towards the dark cloud. But instead of diving into it, the creature suddenly stopped and shoot forward the ink-black cloud of her own. It spread around with surprising speed and proved to be worse than the previous one - it stank, or bite? Maybe both. But the level of discomfort was barely tolerable.

Everyone (!): 12 poison damage or half as much damage on a successful DC 14 Constitution saving throw. (Everyone is effectively blind too now)

The creature probably was somewhere inside the cloud but at the moment you needed to push yourself to search for it rather them rushing out of the biting darkness.

(If you try to attack her - Wis save DC13 first or search another target)

  Davis and Yusko!

 The creature should be somewhere in the cloud. But to attack (at disadvantage) you need first roll Wis 13 DC save)

Stink Con ST: 16

Trudie would drum her fingers along her staff. Even a blind grandma could retort with some stank of her own.

Reaction:

Math Check

Hansel CON save: 18

Con save 11 

Yusko recognized the feeling of the poison for what it was... poison.  So, effectively blinded, he chose to swim upwards and out of the cloud.

Move and bonus action to dash up to 80 feet straight up to be out of the cloud.  Action: dodge

Davis con save: 13
Davis Wis save: 17

Davis will attempt to attack the squid-thing...
Attack: 25 Damage: 17
Attack: 15 Damage: 17

Davis also makes a Bonus action attack, from polearm Master...

Attack: 14 Damage: 8

Con save vs DC 14: 21  Concentration check on Hunter's Mark: 23 vs DC 10.  (Math check: Nameless One at 54 hps. Hunters mark is gone.)