Robin steps back fromt he door, sending a blast of flame at the skeleton closest to her...
fire bolt
Attack: 12 Damage: 7

((Rogi will take the Dodge action after moving into the room))

Rogi will step in and block the passage through the door with his body, as Res charged in and started swinging at the undead. That way, if she were flanked, they could not get through to the rest of the group unless they managed to get through him.

Onyx reaches for his bow, but then realised that the close quater and the crowded space would be a bad place to try and use his favourite weapon, so instead he just rushes inside and starts punching the skeletons:

Attack: 11 Damage: 3

Attack: 23 Damage: 3

Attack: 22 Damage: 5 (Dread Ambusher)

First hit does an extra 4 (from favourite foe), all damage is none magical bludgeoning damage.

Onyx reaches for his bow before decides its jut a pile of skeleton and jumps into the close with fists like a monk but finds his fists are not as effective as a monk against their sets of bones. As he strikes the skeleton, he seem something arcane is shielding them to an extent  as his third strike is deflected off the skeleton's skull. 

Resfaen leaps in with her axe nd find more successful. Onyx has to duck due to tight fit of ther closet as Resfaen lashes with her axe, striking twice. 

Robin jumps as she cast a Fire bolt on instinct but the bolt seem to impact some kind of barrier that surrounds the skeleton.

Rogi leans backwards preparing to dodge as the skeleton move to attack. 

The Skeleton that was struck by Resfaen and Onyx's barrages of fists and radiant baldes, raises it's arm pointed at Resfaen before a ghsotly skeletal fliues from the hand at Resfaen as it cast Chill Touch

Attack: 24 Damage: 9 necrotic

Skeleton #2 raises it's hands pointing them at the door before casting [spell]Burning Hands[spell], engulf everyone expect Salys in the wave oe fire.
Dex Save: 12

Fire Damage: 12 Fire Damage  (half dmage on save)
Skeleton #1 save: 12

Skeleton #3 lifts up both hands makes a vertical clapping motion as it cast Frostbite on Onyx.
Con Save DC: 12
Damage: 3

Skeleton #4 raises it's hand and making a pitching movement before a blob of white webbing is conjured in the air, filling the corridor just outside the closest room (Need Dex save at start of turn for Robin and Rogi DC 12) cast web

Next Up: 
Salys - attmpted pistol shots through webbing. 

Round 2
Onyx -Slight burned, avoid forstbite -  scratch and push
Resfaen - burned - axe attacks with smites
Robin -Burned and Restrained -Grease
Rogi -Slighty brunt but not restainted - Turn Undead

Robin dex saves: 7 and 8

[OOC: Everyone within 10' of Resfaen gets a +3 to saves, so Robin's saves would be 10 and 11 not that it seems to help, sorry.]

Resfaen Dex Save: 8

 As the fire washes over Resfaen singing her exposed skin, she grimaces in pain and tightens her hold on her Sun Axe and continues to swing a the one she has damaged already.

Sun Axe 1: Attack: 11 Damage: 9 Radiant Damage: 5

Sun Axe 2: Attack: 11 Damage: 14 Radiant Damage: 3

 And decides to dump her last spells into some divine smites into both attacks.

1st hit (crit): 26 Radiant Damage

2nd hit: 11 Radiant Damage

If 1st hit kills creature would move on to the next damaged one.

 Almost forgot the Extra Radiant Damage from Sun Axe Crit as well: 2

Dex saves with  +3 from the aura: 26 and 15

Salys draws his pistol and opens fire on the nearest skeleton.

Attack: 10 Damage: 7
Attack: 28 Damage: 8

(Channel Divinity: Turn Undead))

Already in motion from trying to avoid attacks, Rogi is able to avoid the web and much of the fire. He glares at the spellcaster skeletons, surprised that they would even have that ability, then raised his holy symbol up high and channeled the goddess' power to turn them.

Robin casts Grease She targets the area the undead are in. Dex 18 save for skeletons.

Onyx is going to slash one of the skeletons that already got damaged with his claws and push another one into the web near the door.

Salys hears the bangs and shouts, he turns to look back to see a large webbing mess where he knew his comrades were. He races back to see the battle and takes aim. His first shot is a misfire, he stops himself just short of pulling the trigger for the second shot on the blocked gun. 

Onyx -is slight burned but avoid most of the fire and fight of as a pair of icy fangs back down on him. Onyx brings his claws to scratch at the skeleton with good effect  before circling around his opponent giving them a shove but finds his opponent is too slippery and it move so Onyx's shove hits air.

Acrobatics avoid against push: 21

Resfaen takes blunt of the fire and continues slash at the skeleton and with a flash of radiant energy, the first skeleton is felled. He turned to the skeleton Onyx had some go at, hitting it with another smite axe strike but it remains standing.

Robin is surprised by a blast of fire before finding herself restainted by but her arms can move and she throws a ball of grease into the back of the closet. Both skeleton with only boney toes holding them, collapse in a heap above the grease.

Dex Save: 5 / 12 

 Rogi avoiding the blunt of the fire and avoid the webs that restraint Robin. He holds his holy symbol as high as he can as he invoked his god to attempt to turn the undead.

Wis save: #2 15 / #3 5 / #4 14 

The Skeleton find little in ways of movement in the small closest. #2 moves to the back of the closest aywa from Resfaen and Onyx (both can take AoO) entered the greased area, slipping and fall down comedically in its scramble to retreat. The other two skeleton attempted crawl but they're pressed against the back of the closest so they dodge instead. 

Dex: 5

Next Up

Salys - misfired gun - Clear Gun
Onyx - Arrow Shots
Resfaen - Axe strikes - Skeleton #2 'killed.
Robin - restrained- Mist Step Firebolt
Rogi

Robin simply misty step out of the webs and away from the doorway further. She then readies a fire bolt for which ever of the skeletons regain their feet first.

To hit: 28 Damage: 8

Resfaen AoO: Attack: 13 Damage: 10 Radiant Damage: 6

Resfaen will continue to attack the remaining skeletons.

Sun Axe 1: Attack: 22 Damage: 8 Radiant Damage: 3

Sun Axe 2: Attack: 29 Damage: 11 Radiant Damage: 4

 Radiant Crit damage: 4

Salys takes a moment to fix his gun, sending Bearskr forward to help and defend Rogi if able.

Misfire repair, DC 9: 28

AoO: Attack: 12 Damage: 5

Since the skeletons them self create some space, Onyx uses the chance to grab his bow and shoots the one that is most damaged (assuming they all try to get away) with two radiant arrows.

•  Attack: 14 Damage: 11
• Attack: 31 Damage: 22
• F.Foe extra damage (double if it is the crit) :2

Rogi will cast sacred flame at the nearest skeleton which has been damaged, and is therefor not turned anymore. Dex save vs DC 16 or take 13 radiant damage.

Salys clears his gun after just hearing a click before finding a jam, pulling out his tools to clear the breach as he send Bearskr to try and help Rogi,
Onyx takes a swipe as the skeleton runs away but misses. Onyx pulls out his bow and let loose two well pracitced shots into the shots into the scrambling skeleton. 
Resfaen follows the skeleton after a swipe before following the retreating figures (she may or may not have fallen), striking at the skeleton #3 on the ground with her axe, knocking it's bones against the stone wall. She turns and strikes again at #3 with her axe. 
Robin vanishes from admist the webs to appear not far off. She readies a firebolt for the skeleton.
Rogi ignites a flame near Skeleton #3 that ignotes the skeleton for a moment in radiant energies.

Dex Save 9

Resfaen - need dex save due to Grease DC 18

Skeleton #3 scrable to it's feet under the grease as a firebolt flies from Robin's wand, striking it. He points it's bony finger at Onyx. Onyx need to make a Wisdom Saving Throw DC 12 or fall under spell's effect in spoiler tag.

 Skeleton #4 stands up and Dodges as it's pressed against the back of the closest. 

Next Up

Salys - Pistol Shots
Onyx- Saved Arrow Shots
Resfaen -Prone but axe strike before hand
Robin - 
Rogi

Salys fires his newly fixed pistol twice at skeleton #3.

Attack: 19 Damage: 7
Attack: 23 Damage: 7

Depending on Onyx's save, if needed: 

Con Save: 11 / 9