When it's Zarbyn's turn again he will attack twice with his shadow blade:

1st attack: 10

damage: 23 force damage

2nd attack: 13

damage: 15 force damage

"Swish, and swish... you'll soon wish you didn't meet this gish!"

Amdaeng snarled as she was grazed by an arrow and then hit, " Not my best day...."

" Ning! Help Vydar!"

She grinned at the thug attacking her and went for a sweep kick and then a knee to the nose bridge.....

Attack: 29 Damage: 9

Attack: 15 Damage: Unable to parse dice roll.

Ning runs to bite Vydars attacker.

Attack: 19 Damage: 6

Lira gives a hiss of pain as the arrow hits her, resisting the urge to retaliate on the archer for now. She switches to Needle and moves to attack the captain with deadly precision.

Action: needle to hit w lucky advantage nat 20+8, damage 11 + 18 sneak attack.

Bonus Action: cunning action disengage and withdraw from captain's melee range if he doesn't fall 

Still being a bit distracted from their previous encounter, the arrow suddenly appearing in his shoulder seems to snap Vydar back to the present. He hisses in pain when he turns his eyes to the one who shot him. Despite the clouds, it's still light enough to interfere with his vision. 

(Round 1 if he's still able to attack.) 

He casts firebolt at the one who shot him. (not sure which that was) To hit: 20 Damage: 19

(Round 2)

Then another thug jumps up onto the bridge next to him. He manages to dodge this attack, and draws his rapier. When he does this, his body seems to take on a dim red aura. (Bonus action, activate Bladesong.) Then he attacks Thug 5

To hit: 10 (critical fail) Damage: 8 

(Round 3) 

He takes another jab at Thug 5

To hit: 23 Damage: 10

Zarbyn misses the captain, clearly well skilled in sword fighting.

Lira jumps on the edge of the bridge. Like a cat, she moves around Zarbyn and Jherik and her tiny dagger finds the other eye of the captain. His smiles turns into a frown as his body falls to the floor with her on top.

Amdaeng attacks the man attacking her. She hit with both attacks, but he seems hardier than the last two.

Vydars firebolt hits Thug 3 squarely in the chest. Then turning he attacks the thug that came from below but misses on his strike. Fortunately, Ming runs over to assist. She has grown considerably since she was first recovered in Cache 2,. Ming claws at the thug attacking Vydar. He is caught by surprise and sharp claw tears into flesh.

RD 3

Vydar Attacks again, stabbing the man being accosted by a large black bear. (He still stands but looks unhappy)

Two arrows come in from the boat up river. One hits the bridges exterior, but the second hits Jherik. 5 piercing damage

----->Jherak, Lev, Lira, and Zarbyn all have actions.

(Amdaeng can declare actions but she goes when the thugs go.)

With the captain dispatched, Lira moves south east to the other edge of the bridge to attempt a shot at the pesky archer upstream.

Action: shortbow to hit w inspiration 21. Damage 5 + 5 sneak attack.

Zarbyn is going to use his bonus action for Steps of the Fey to cast Misty Step without using a spell slot and using Refreshing Step to regain 10 temp hp.

He will appear about 10 or 15 feet to the North, or whatever is necessary to appear within melee range of bandit 4, and then strike at him with two slashes of the shadow blade.

1st attack: 17

damage: 25 force damage.

2nd attack: 19

damage: 18 force damage.

"Swish, and swish, it's time to feed the fish!"

Amdaeng nodded to her opponent, "Your tough...."

" Ning! Hamstring!"

She sent two punches at his face.....

Attack: 28 Damage: Unable to parse dice roll.

Attack: 23 Damage: 11

Ning attempts to hobble Vydars attacker.

Attack: 12 Damage: 9

The archer on the small boat takes aim but is thrown off by Lira's attack, missing their shots. They then jump to shore and go between two buildings (Out of LOS).

Zarbyn disappears from his place on the bridge, then reappears near thug 4. The two attacks quickly dispatch the unsuspecting opponent.

The man near Amdaeng smiles but wildly swings his mace while he gets punched in the. She sees his eyes roll up in his face as the sound of broken nose penetrates the brain behind it. He falls to the ground dead.

Vydar stabs (thug 5) with his sharp rapier. He attacks back, hitting Vydar with a mace, then strikes a second time: To hit 16, 6 damage, to hit 21, 4 damage:  Then Ning raises up, knocking him down and bites at his throat. There is one last gurgle sound and then....nothing.

----->Jherik, Lev. (one guy left on the bridge: (Thug 3)

(Ending the combat with me assuming Lev and Jherik finish them off)

Just as quickly as the battle started, it is over. Six crimson legion lay dead or close to it. The archer in the small river boat seems to have jumped out of the boat on the south side and slipped between some buildings. Slight rain and the pending sunset makes for somewhat damp and misty weather.

"Should we dump them over the bridge?"

Zarbyn puts the hood of his cloak up to block the rain somewhat.

"I was half joking before... but whatever we decide let's be quick about it and get inside somewhere out of this rain, either the next tavern or the perfumers."

Lira frowns to herself, uneasy about the archer who got away. Sighing, she pulls her hood up as well while Snowball the skunk snuggles deeper into her pack.

"I'd rather not pollute the water any further if possible," she states while moving to check the bodies for anything of note.

Investigation: 14

Each of the thugs has a crimson sash. A total of 20 gold is recovered. The captain has silver ring with two crossed swords on it that seems interesting. He also has a well made pair of leather gloves.

Lira will take one crimson sash (but not put it on right now), the gold, and gloves if no one else is interested. She'll hand the ring to Zarbyn since he is more similar to the slain leader, though not by much.

"Hm...With the captain's ring and these sashes, we could pull off a disguise in a pinch."

" Lets move it. There will be more of them soon.", Amdaeng urged.

" Ning, come on!"

(Lira perception roll please)

9

(Even with the poor role) Lira notes two things. First, the man that slipped away used (cunning action) much like she would. Second, he did not have a crimson sash as all of the others did.

(I know you said you assumed the final thug was finished off, but I’ll provide an attack for the sake of evidence.)

After taking a stinging shot from an arrow he didn’t see coming, Jherak sheaths his sword and swings his bow around, notching an arrow in a fluid motion. He tries to focus through the pain before letting the arrow fly. 

To hit-17, 11 damage.

Afterward, he’ll check on his friends to see how they are doing, health-wise. 
“Anyone need healing?”