Bronx is first, then the nothics, then everyone else. I'll cobble together a map for this one.

Map: 

Bronx roars! Into the fray!

Attack: 7 Damage: 6

War Priest feature! Attack again!

Attack: 9 Damage: 10

Bronx charges through the broken wall of bones, femurs and tibias cracking under his feet. He swings at (uh...let's say #1) the first nothic he encounters, finding only air. His second strike meets the nothic with a crunch against its hard shell-like skin.

The nothics completely surround Bronx. Nothic1 and Nothic4 both swipe at him with their claws twice.

Claw Attack: 12 Damage: 4

Claw Attack: 15 Damage: 9

Claw Attack: 14 Damage: 9

Claw Attack: 19 Damage: 5

Nothic3 turns to Shift, gazing with intensity at the giant fox. CON(12) check: 15, suffering 6 necrotic damage on a failure. (no damage)

Nothic2 does the same to Zinn. CON(12) check: 25 (Ignore this roll:0), suffering 9 necrotic damage on a failure. (10 points of damage)

(Shift, Zinn, and Kaltent are up!)

Shift dashes through the opening and come around behind the Nothic's on Bronx west side.

Shift attempts to bite the first Nothic, also trying to trip it up.

Zinn angrily waves his hands summoning a note of fire which he proceeds to hurl at the Nothic.

 FireBolt: Attack: 16 Damage: 13

Quote from Paradox42 >>

Shift dashes through the opening and come around behind the Nothic's on Bronx west side.

Shift attempts to bite the first Nothic, also trying to trip it up.

Move: South and then West to have some or one, Nothic between Shift and Bronx

Action: Bite: Nothic1

Attack: 20 - Damage: 12 magical piercing damage. (+1 bonus and magical from the Insignia of Claws)

If the target is a creature, it must succeed on a DC11 Strength Saving Throw or be knocked prone.

 

Dire Fox Form:
AC: 15 (Monk AC: DEX + WIS)
HP: 30/30
Speed: 60 (50 base + 10 monk)
Saves: STR +2, DEX +6, CON +2, INT +4, WIS +5, CHA +3 (advantage on DEX saves from Agile feature of the form)

 

FYI, everyone is huddled right in the opening, meaning going round everyone will result in 3 (!) AoO to get to the one west of Bronx. The one just north of him is the closest to Shift during his attack.

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Zinn's fire splashes against the stone ceiling. (Crit fumble roll: 11). His spell fails spectacularly as he fails to close the spell properly in his casting of it.

You fall prone. Roll a DC 15 constitution save, on failure you take 1d6 bludgeoning damage and 1d6 thunder damage. On success take half damage.

Kaltent then rushes forward, slashing at nothic3.

Booming Blade Attack (including sneak attack): 13 Damage: 24 + 5 if nothic3 moves on his next turn.

Zinn CON(15) check: 2 or take 5 damage, half on a success.

(Bronx is up! I will post a map when I know which target Shift ultimately takes.)

Bronx strikes at Shift's target!

Attack: 10 Damage: 9

aaand burn my last channel divinity to give the attack +10 to hit!

Nothic2 STR(11) check: 18

The nothic takes Shift's hit but remains standing. Bronx wheels around, smashing the abomination with a little divine aid but, bruised and bleeding, it does not fall.

The nothics to the west, north, and south each attack Bronx in unison.

Claw Attack: 24 Damage: 7

Claw Attack: 22 Damage: 7

Claw Attack: 24 Damage: 10

Claw Attack: 12 Damage: 9

Claw Attack: 21 Damage: 5

Claw Attack: 6 Damage: 9

Nothic3 attacks Kaltent.

Claw Attack: 5 Damage: 9

Claw Attack: 17 Damage: 4

Shift, Kaltent, and Zinn are up!

Shift tears into the Nothic again, with a ferocious growl.

Zinn shudders as he sees the vicious claws of the Nothics tear into his companion. He quickly positions himself and furiously shouts the ancient words and begins hurling rays of fire at thief foes.

Scorching Ray: Level 4 Attack: 2 days each at Nothics 2&3

16 Damage: 11

7 Damage: 10

24 Damage: 10

10 Damage: 10

Zinn manages to take out the first of the four as two scorching rays sizzle against nothic2 and it falls down dead. Nothic3 takes a single strike as well, causing it to cry out in pain and turn and hiss at the little kobold.

Kaltent slashes again at nothic3.

Booming Blade Attack (including sneak attack): 19 Damage: 4 + 1 if nothic3 moves on his next turn.

(Nothics 1, 3, and 4 are still upright. Bronx is up!)

Bronx considers his options, and the many perforations in his otherwise fantastic armor. He disengages from the fight by throwing Topher at the Nothic directly in front of him. 
"BEHOLD THE POWER!!!!"

He then tactically shoves his way to the back of the group, not retreating, mind you, just repositioning for more fighting later.

Seeing one of theirs fall to a blistering magical ray, the remaining three nothics cease their attacks and cower together, hands raised and head bowed. They chattering piteously in a language that few in the group understand.

Zinn:

 (I will say that combat has not ended yet. The nothics are all taking the dodge action. Zinn, Shift, and Kaltent are up.)

Zinn hold one hand still in the air at his companions as he responds sharply in the strange language.

“Help?! What help could the likes of you be to us?”

Arcana check to see what Zinn knows about Nothics: 12

Zinn knows nothing about nothics but seems to recall they are magically created in some fashion or something like that.

Zinn:

Shift growls at the cowering Nothic's but doesn't attack, waiting for Zinn's direction.

“Very well Nothics, but you lead the way. Walk ahead of us and lead us to the third level, and do not try to deceive me... or you will BURN with magical hellfire!” 

Intimidation 13

Zinn watches the Nothics suspiciously, and relates what was said to his companions, warning them to be vigilant.

Shift turns his large fox head towards Zinn, a grin on his face at the commanding ferocity from his diminutive friend.

As Zinn explains what's going on, Shift nods and turns back to the Nothic's, keeping a mean look on his Fox face and occasionally growling at them.