@CalPol The Creatures emerging from the houses are Twig Blights, there are at least three with more behind them.  Confirming your target.  The zombies in the door of the Tavern (note very close quarters for a battle axe) or the TwigBlights to the south. 

This (left picture) is what they look like as the tokens are not really clear.  The picture beside it is of the zombies pushing out of the Tavern where Velshir is standing but with rotted clothing and covered in mold (best picture I could find)

CalPol heads south looking for a new target and spots Twigblights to the south, one dead Zombie next to Prentiss and one blocking a doorway in front of Velshir to the small tavern.  He sees that an attack in such a narrow doorway would put Velshir at risk of collateral damage from the big weapon.  Kallen is already running for the TwigBlight emerging from the most western structure, but he spots two from the crumbling buildings more to the east that don't have anyone's attention yet.  (redirect to Twigblights or still to the Zombie?)

Kallen rushes the small bush-like creature, mostly devoid of any leaves leaving a look of walking dead branches with sharp blade like ends.  She slashes at it with her dagger and it falls in a heap, another TwigBlight emerges behind it moving in for an attack.  

Joshua you may post your attack.  

@Brencharis - you are still suffering the ill effects of the ash cloud, please roll another Con save to see if you can fully catch your breath after you take action this round.  Your moves will still be at disadvantage for all actions.  

Initiatives ->  new TwigBlight6 initiative  17

CalPol rushes to the TwigBlights emerging from the central structures not having space to effectively attack the Zombie in the doorway crushing the first with his axe blow.  

The other TwigBlight5 slashes at CalPol who is now in range.  Attack: 8 Damage: 3   but is unable to cut through the Chainmail he wears. 

Joshua's move

(the darker tokens are all TwigBlights, the ones with the white background are AshZombies.  I can make the numbers easier to read but am struggling to make them easier to see)

Initiatives -> 

Not having any other threat up here Joshua will move down into the middle of the area and hurl another Fire bolt at the remaining visible TwigBlight(5) 

Attack: 16 Damage: 9

Velshir mutters between breaths, "Someone remind me why we're here again? This place is accursed!"

Brencharis stumbles back towards Joshua and Cal Pol, wheezing as she tries to get a breath of fresh air further away from the ashen dead of Thundertree.
CON save: 16

As the sun continues to set in the distance Prentiss, Cal Pol, and Kallen are starting to see that they will have some difficulty with visibility soon though not likely during the battle.  

Joshua seeks a better position back towards the path and a fire bolt flashes bright in the evening sky at the TwigBlight5 furthest East but misses it narrowly.  

@Brencharis you make still take an action prior to the save attempt at disadvantage should you wish to.  She can see another TwigBlight6 emerging from the building where Kallen stands as the closest to her due to breaks in the crumbling wall. 

The large AshZombie2 in the doorway attempts to push itself further out of the building its spent the last several decades in, revealing broken areas of skin where it likely left parts behind in its resting place within the tavern.  There are now several more behind it pressing and encouraging the first.  Bolstered in size by a lifetime of good food and plentiful ale the creature rushes forward.  Attack: 10 Damage: 6  but misses the slippery monk again.  

Next to it the sound of smashing and crashing is heard behind the window shutters from the room adjacent.  

@Joshua and Brencharis - perception  please 

Checking for an action from Brencharis then the new TwigBlight6 near Kallen will move.  

 Initiatives -> 

Perception: 16

@joshua  

Over the din of battle, Prentiss responds to Velshir's question "Didn't Loren say there was something here we needed?  A brooch for some maiden back in Phandalin?"

Velshir on his turn will continue to do what he does best

Mace Attack: 14 Damage: 10

unarmed strike Attack: 18 Damage: 5

Initiatives above in spoiler -

@Brencharis may still take an action then the Zombie and TwigBlight near Kallen will move. I have Constitution save which will apply at end of round, you may still take action at disadvantage and roll Perception check.   

@Joshua results of your Perception check in spoiler in post #2012, you may do what you wish with this information.  Not considered shared at this time. 

"No wait, there's a valuable necklace here somewhere, the woodcutter's wife told us about is as a reward for saving her!  And Loren said there was an old druid here, might know the way to Wave Echo Caves!"

Prentiss is so excited at the recall that he almost forgets the lethal creatures attacking the party.

Brencharis coughs and sputters too distracted to get in an attack when finally she dislodges a mass of nasty gunk from her throat expelling it and feeling much better.  

The TwigBlight6 rushes from behind the wall taking a stab at Kallen now in range of it just having taken out its fellow plant-life Attack: 10 Damage: 4  with the shield of faith deflecting the blow.  

Prentiss' turn

Initiatives 

Prentiss stabs at the ash zombie with both daggers again, gritting his teeth in feral rage.

Dagger 1 Attack: 17 Damage: 6 

Dagger 2 Attack: 9 Damage: 2 

Prentiss stabs ferociously at the AshZombie with his daggers hitting the large creature in the the shoulder and following with a piercing blow to its boundless girth made even more impressive by enumerated sores and growths all over it. As Prentiss connects with it, its gut explodes in an ashen mess of pus and spores filling the air that covers him and splatters over Velshir positioned directly in front of the creature.

The large creature seems little affected by these strikes beyond the eruption of his stomach and continues his progress towards Velshir.  

@Prentiss Please roll Constitution (ash/goo exposure)
@Velshir Please also roll Constitution (ash/goo on you too)

Initiatives 

Prentiss recoils at the disgusting eruption, wondering if he might be best advised to switch tactics.  In the meantime, he has some gagging to do...

CON save 24 

@Prentiss - Aforementioned gagging successful.  No side effects.

@Velshir - I have your move, please roll Con save before I process. 

con save 4

perception: 12