"That was not very charming of you," says Nif, "I guess I'll just have to run you through." As he draws his shortsword and strikes at the bearded old man.

Attack: 21 Damage: 8 piercing damage.

(Does anybody need a healing word? It’s the last spell)

Adrom tries to finish off the spider as he exclaims seeing the deception come clear 
“ I knew something was wrong with him” 

(I think I posted my attack before hand? Don’t want to make an “extra” attack) 

The bearded man grunts in pain as Nif's sword leaves a bleeding wound.

Adrom steps toward the two spiders and swings his hammer, but the creature dodges the attack.

The two spiders then attack the cleric. (Attack: 14 Damage: 10; Attack: 12 Damage: 7) Adrom's armor proves sufficient protection against the giant arachnids' mandibles.

11

The spider above Vondal clicks at him menacingly.

Vondal, you're up! Karl, you're on deck.

Vondal's scowling at the fallen creature soon turns to a look of worry seeing the spider just MENACINGLY hanging out above him. "Okay, okay, okay, time I most DEFINITELY go now! Igmot, Erulu, Igomonos!" He said, though the last three words came out more a hurried chant, summoning a bead of fire at Vondal's finger tips. "This is gonna sting." He murmured tightly just before releasing the spell, and in theory setting the webbing aflame with a bolt of fire. 

If so, torn briefly between Adrom and Nif, he murmurs a dwarvish curse before rushing for the hall to join Nif.

Action: Cast (Cantrip)Fire Bolt at Vondal's webbings.
Attack: 8 Damage: 3 Fire. (Not sure how much Vondal would take on a successful hit)

Movement: To N-8(if able).

@Orileo: I'm going to rule that if you're restrained by webbing, you're basically wearing it. It would be like trying to hit your own clothes with a fire bolt. I'm going to nix that and turn your roll into a STR saving throw to break the webs. As it wouldn't have been rolled at disadvantage, your roll would have been a 20. You easily break out of the webbing and hurry to Nif's side at M8.

Karl, you're up!

"Leave the young 'un alone and try on somebody more your size" Karl yells at the stranger as he stomps (well dashes to be more exact) towards N9.

The bearded man chants a short phrase, surrounding himself with magic.

Nif, you're up! Adrom, you're on deck.

Nif, impressed with his own swordsmanship strikes at the bearded old man again. 

Attack: 8 Damage: 6 piercing damage.

Not so impressed this time, he takes a bonus action to disengage and squeezes past the old man into the room advancing to O5.

"Go away you multi-leggy, hairy, multi-eyed, reeking, ugly things!!!" yells Adrom to the spiders, moving his weapon trying to smash their heads.

( Action Attack: 23 Damage: 7

BA Attack with war priest feature ( only 1 left ) Attack: 12 Damage: 8 ) 

Nif thrusts at the bearded man, but the wizard is able to avoid the attack. Using his momentum, Nif slides into the room. On his way in, he sees his drinking buddy, Nundro, huddled in the corner. Wasn't he just in the other room?

Adrom, ready to be done with the giant spiders, takes two swings his with hammer, but the creatures dance out of the way of both attacks.

14

The (green) spider attempts to take a bite out of Adrom (Attack: 20 Damage: 4), but the cleric's armor is too thick. The (red) spider spits webbing at the holy dwarf (10), but it misses completely. The (pink) spider walks across the ceiling to be directly above Vondal.

Vondal, you're up! Karl, you're on deck.

Though Vondal can hear his doom crawling into position overhead, his gaze stayed strained but focused on the wizard. "You partner is dead, and soon you will be if you don't surrender!" He exclaimed the last note as he threw himself into a combination of punches and kicks that would culminate in either badly bruising the wizard, and his falling into a defensive stance; Vonsorm's position in hand having being shifted to help parry any counter attacks.

Action: Lightning Crash (Agile Parry triggered, gaining +2 AC until start of next turn)
(w/ Kinsei Weapon in hand)Unarmed Strike - Attack: 22 Damage: 6 non-magical bludgeoning. 

Bonus Action: Rolling Thunder Strike on Mystery Mage. (or if shielded above action, target spider if now in range)
Martial Strike - Attack: 13 Damage: 4 non-magical bludgeoning. 

Karl watches the whirlwind of attacks that Vondal launches at the wizard and smiles "like a Tassie Devil you are young 'un - that's what!" as he swings Hew at the wizard's legs Attack: 22 Damage: 10

While the bearded mage's magical armor deflects Vondal's first attack, and he is able to dodge the second, it is clear that the monk's words have stung. Karl steps up and swings his axe, which cuts through the man's armor, leaving him a bloody mess. "I yield!" he cries, almost toppling.

Nif, you're up! Adrom, you're on deck.

Nif slips in and attacks the bearded old man with his shortsword,

Attack: 12 Damage: 5 piercing damage.

On a hit, sneak attack bonus: 10 

"Sorry lads!!" yells Adrom behind his shield to be heard above the thuds of the bites of the spiders on it "One has slipped away towards you! look up!!" and he then tries to smash one of the spiders that are still bugging him 

( bugging him... see what I tried to do there? :P 

Attack: Attack: 25 Damage: 10

BA: Attack ( last one): Attack: 11 Damage: 11

If any attack rolls below 10 I am going to use the channel divinity feature to add +10 to that attack. This is taking too long ) 

(Edit... well not sure if I can use that feature with a nat 1. If I can then let's use it, if not... then I would not expend it since the other roll was just a 10 ;) this fight isn't going for godd rolls for Adrom poor thing).

Nif attempts to strike down the mage, but the man's magic defenses deflect the dwarf's blade.

A natural 1 is always a miss, so ... Adrom swings at one spider and misses miserably. His second swing, however, makes contact. (No use of channel divinity.)

11

The green spider tries to bite Adrom while the red tries to wrap him up. (Attack: 24 Damage: 9; 12) The bite hits while the webbing misses.

Adrom, roll a DC 10 CON check to keep shield of faith up.

The red spider continues to hover above Vondal.

Vondal, you're up! Karl, you're on deck.

Karl watches Nif's short sword miss the Mage and thinks to himself "I though I taught the young 'un better'n'that but he's for all his bravado, he's obviously no killer. Mind you that's probably not a bad thing!"

(Adrom's CON save: 15)

Vondal looked taken aback for a moment or two by the mage, before then narrowing his eyes in clear distrust. Yet, just as lips part for a demand, what escapes is at best a syllable before turning into a sharp and flustered gasp. "Nif! What-?!" Vondal started to say, only to be reminded of the spider's presence above in a click of mandibles. The hill dwarf whipped around ready to catch fangs on Zindral. But then, seeing the creature just still standing above menacingly left him both relieved and confused and somehow even more terrified at the same time.

With judgy Uncle Karl however just a few feet away, Vondal quickly tried to smooth his face back into one of bravery and readied himself to strike. And yet, there was hesitation. He squinted and grew tense, trying in vain to get a read on the creature, seeing as it hadn't attacked again. In the wake of any definitive answers though, the hill dwarf took the risk and turned his attention back to the mage, lashing out with a few sharp blows for the head aimed at knocking the mage out.  Whereupon success he'd say to Karl and Nif, "We need deal with spiders next 'fore they overwhelm Adrom."

Action: Animal Insighting on the Spider: 15.

(OR if the above wouldn't be an action, then doing the below as well)

Action: Lightning Crash (Agile Parry triggered, gaining +2 AC until start of next turn) on Spider(if determined to be still hostile. If not, targeting mage with non-lethal attacks).
(w/ Kinsei Weapon in hand)Unarmed Strike - Attack: 14 Damage: 4 non-magical bludgeoning. 

Bonus Action: Rolling Thunder Strike on same as above. (if mage is knocked out by above, changing target to spider if in range)
Martial Strike - Attack: 18 Damage: 4 non-magical bludgeoning. 

(@DDP: Just so its clear, the Spiders are like human/dwarf sized, or larger? Meant to ask this waaaay before, but got hard sidetracked. And secondly, how high is the ceiling in the hallway?)

The ceiling is 20 feet up. Yes, the spiders are very large. The body is about 2/3 the size of a dwarf's, but with the legs, it's overall quite a bit larger than a dwarf. The spider is following you, so you imagine it's up to something.

Vondal uses the blunt edge of his sword to knock the bearded man out. He slumps to the floor.

So, Karl, there are two spiders engaged with Adrom about 55 feet away. There's an unconscious mage on the floor just inside the room you're standing just outside of. And there's another dwarf huddled in the corner inside the room that looks like Nundro. Oh, and there's a third spider on the ceiling above Vondal.