Shamash will charge at the other injured Bugbear and attempt to finish him with a longsword attack:

Attack: 7 Damage: 5

Shamash charges into the wall as the bugbear with the eyepatch sidesteps. The bugbears continue to attack Yed, but the goliath avoids the blows.

Attack: 8 Damage: 16
Attack: 10 Damage: 12

(Everyone is up.)

Big Bear spins around, bring his staff across for a back-handed slap: Attack: 11 Damage: 4

Big Bear's shillelagh bounces off the bugbear's armour this time.

(Shamash, Yed, Doc.)

    Yed turns to deliver yet another two handed reckless swing on the final surviving bugbear.

   Reckless Warhammer Attack: 22

    Damage: 12

Yes’s swing misses both of the two surviving bugbears.

(Doc, Shamash.)

Doc takes advantage of the chaos and continues his assault on the bugbear!

Rapier + Sneak Attack:
Attack: 18 Damage: 12

Bonus Action:
Shortsword offhand (No Damage Bonus)
Attack: Attack: 16 Damage: 2

Doc stabs the bugbear with the eye patch in the heart, killing him.

(Shamash.)

Shamash recovers from the embarrassment of hitting the wall, shaking his head. He just feels so distracted by that Nothic in the other room. He launches himself into an attack of the remaining bugbear.

Attack: 9 Damage: 11

Shamash's attack is no more successful than his last one. The remaining bugbear drops its weapon and shouts "I surrender!" The words echo loudly around the small room.

(Everyone is up.)

   Yed roars with rage, and still swings at the final survivor despite his proclamation, but instead of aiming at his chest or head he swings at the bug bears left knee. Hoping to cripple severely but not kill. 
   (Non-lethal damage) 

Reckless Two Handed Warhammer:25

Damage: 13

    After the swing Yed simply roars with rage at the bugbear, he breathes heavily and holds his weapon in a tight, white knuckled grip.

Yed deals a heavy blow to the bugbear, who roars back in pain and confusion.

(Doc, Shamash, Big Bear.)

(You may talk outside of initiative order.)

Big Bear moves to knock the BugBear out: Attack: 22 Damage: 6

Doc approaches quietly and uses the back of the bell-guard of his rapier to knock out the bugbear, seeing Big  Bear make the attempt.

Cunning Action:
Hide:
9

Rapier + Sneak Attack:
Attack: 19 Damage: 16

(Forgot to roll with advantage, but didn't matter anyway since nat 1 on the stealth)

"Tie him up. We'll drag him and Iarno out of here and get some answers later."

Doc whacks the bugbear on the head, but he still doesn't go down!

(Shamash.)

Shamash tries to recover, he just cannot shake his feelings about that Nothic. But he tries to focus and knock the bugbear out (non-lethal attack).

Attack: 11 Damage: 11

Shamash's swing once again sails past the bugbear. 
The bugbear picks up its weapon and swings at Yed again! Shaking its dirty mane, it yells "Barbarian bastards! Don't you have any honour!"

Attack: 18 Damage: 8

The door at the end of the corridor swings open, and four Redbrands stumble through. Seeing the ongoing fight, they join the melee! The corridor constricts their movement and they attack Doc one at a time, moving to allow the next one to swing.

Attack: 14 Damage: 3
Attack: 16 Damage: 8
Attack: 5 Damage: 8
Attack: 21 Damage: 4
Attack: 5 Damage: 8
Attack: 13 Damage: 8

The Redbrands seem rather drunk and have trouble handling their weapons properly.
Several worn tables and chairs are scattered around the large room behind them. Wooden benches are drawn up against walls decorated with draperies of brown and red, and several ale kegs are propped up and tapped.
A stack of coins, dice and other trinkets is heaped upon a table.

Map:

(Everyone is up. Doc can take an AoO on one of the Redbrands.)

      Yed will swing his Warhammer into the bugbear’s genital area, with a reckless two handed swing. Hoping to take out the threat on the middle of the room so his party can focus on the bandits forming a bottleneck in the entrance.

 (Nonlethal) 

  Reckless Warhammer Attack: 20
  Damage: 11

Doc is startled as they swarm at him! He swipes at the last one in front of the doorway.

AOO
Rapier:
Attack: 13 Damage: 5

He then will repeat his strike!
Rapier + Sneak Attack:
Attack: 23 Damage: 15

Cunning Action:

Disengage

His flurry of strikes ended, he doubles backwards and retreats out of melee!

(OOC: I'm assuming that I can move through Big Bear's space since we are friends (accepting that opens me to an opportunity attack). If that doesn't work, let me know and I will revise by just doing a regular attack at the Bugbear.)

Shamash looks to the new action at the door. He feels his frustration and helplessness building as attack after attack has failed. He feels a cold, seething anger rising up within him. Once he sees Doc scamper away from the doorway, he knows what to do. Moving around Big Bear, he moves into the doorway, filling up its frame, and taking a deep breath he will breathe out a massive cone of blue-ish cold fire in a 15 foot cone in front of him. (Each of the Redbrands makes a CON save (DC 11), half damage on a save).

Breath Damage (Cold): 5