The Tales of the Fellowship of the White Cloaks

Kazri and the Frost Giant trade blows as they fight fiercely.  Kazri gets one strike in and the Frost Giant also gets one (13-miss and 27 to hit, 23-3, 20 damage)

Krom and then Chill are up

Initiative: Round 4 - Krom (70/94), Chill (63/63)+10, Auril, Rhogar (86/87) Bless -7 & Gorrah (17/17), Frost2, Kazri (54/104) Bless -7 & Oli (42/42) Bless -7, Frost1

“It will take more than a few blows to bring down a Smith of Moradin!” Krom shouts defiantly, raising his shield to block the giant’s axe.
The impact drives the dwarf to his knees, shattering his focus. The flaming wall surrounding the giant falters, then collapses and vanishes in an instant.
With a fierce battle cry, Krom surges back to his feet and swings his fiery warhammer in a powerful arc, aiming to crush the bones in the creature’s leg. From the opposite side, the translucent maul mirrors the dwarf’s maneuver, striking in unison with relentless force.

Action: Warhammer attack on Frost 2
Attack: 12 Damage: 13 + 4 of Fire damage

Bonus action: Spiritual weapon on Frost 2
Attack: 25 Damage: 10

Con check for Wall of Fire: Failed (I rolled a 10 in the game log - DC was 12)

Chill continues to take steady aim at the Frost Giant and fire

14 to hit, 29 damage from Game log

Krom's spiritual hammer continues to hit as Krom struggles to land a hit with his real warhammer. With a rare miss Chill overshoots the frost giant.

Auril once again tries to cast a spell, and while the counterspell is more of a struggle Rhogar once again dispells Auril's effort.

Rhogar with Gorrah are up

Rhogar clicks his tongue as he's once again forced unravel another spell. "A war of attrition then, huh? So be it! Oli! We're pressing forward!" Without missing a beat, Rhogar rushes around the young owlbear firing another lightning bolt from his staff at the giant harassing Krom, hoping to bring it down. But even if he should fail, divine light peels away from his body and flies off as concentrated balls of restorative energy straight from Krom. Long before the dragonborn made his move, his smaller draconic companion took off on her own flying on a more northerly path around the Mythallar for a better view on the fight between Kazri, Chill, and their own giant. 

Movement/Action(Gorrah): Dash to within 20ft northeast of Kazri's position and 20ft in the air. (Avoiding opportunity attacks wherever possible)

Movement(Rhogar): 15ft South of current position.

Action(Rhogar): Cast from Staff (5th level)Lightning Bolt upon Frost Giant(B). Dex Save(DC 16) to take half of 36 lightning damage.

Bonus Action(Rhogar): Using Healing Light(4 of 6 remaining) on Krom, restoring 6 HP.

Gorrah moves around the Mythallar while Rhogar takes an aggressive move south. His lightning bolt slams into the Frost Giant battling Krom.  The giant looks in rough shape.

The frost giant swings its mighty axe at Krom but fatigue is setting in and he misses both times (14 and 18 to hit)

Auril suddenly teleports a short distance and comes within melee distance of Rhogar still flying right above him.  She slashes at him with her talons. (16 to hit, 6 piercing + 1 cold damage)

Kazri and Oli are up

Initiative: Round 4 - Krom (76/94), Chill (63/63)+10, Auril, Rhogar (79/87) Bless -7 & Gorrah (17/17), Frost-B, Kazri (54/104) Bless -7 & Oli (42/42) Bless -7, Frost-A

Oli finally sees his chance to help. He lunges at thing that is attacking Uncle Rhogar.

Oli beak attack: 6 Damage: Unable to parse dice roll.

Oli claws attack: 9 Damage: 11

Kazri keeps the attack on Frost1. "Chill, go help Rhogar. I got this one." She raises her sword once again (Divine Smite lvl1)

Attack1: 22 Damage: 11

Attack2: 11 Damage: 7

(If either attack hits, it deals an extra 13 radiant damage)

Oli claws at Auril who has come into range and rips into her.

Auril slashes back at Oli (20 to hit, 4 piercing and 6 cold)

Kazri strike the Frost Giant on both hits and the Frost Giant is unable to land a blow against her.

Krom and then Chill are up

Initiative: Round 4 - Krom (76/94), Chill (63/63)+10, Auril, Rhogar (79/87) Bless -7 & Gorrah (17/17), Frost-B, Kazri (54/104) Bless -7 & Oli (32/42) Bless -7, Frost-A

(UGH!!!! Sorry guys. I keep forgetting to add Bless. Next round for sure!!!)

Chill ignores Kazri as he unsure where Rhogar is at the moment and won't let Kazri face this giant alone. 

He continues to shoot at the giant while taking steady aim.

To hit 28, damage 35. Game log

Krom stands his ground, deftly swatting aside both of the giant’s strikes with his shield. “Fall already, longshanks! We have a goddess to put in her proper place!” the dwarf roars.
With a surge of strength, he swings his fiery warhammer in a powerful arc, aiming to finally bring the frost giant down. At the same time, the translucent maul streaks through the air toward the creature’s temple, striking in deadly unison.

Action: Warhammer on Frost giant 2
Attack: 27 Damage: 10 + 6 Fire damage

Bonus action: Spiritual weapon on Frost giant 2
Attack: 17 Damage: Unable to parse dice roll.

Movement (if the giant dies): 25ft towards Auril

(@DM - As the dice roller seems to display different values every time I open the page, I'm uploading below my original post)

Krom finally gets a hit with his warhammer but it not enough to finish the giant off as his spiritual hammer misses.  Chill, refusing to leave Kazri gets a solid hit against the giant they fight.  It also is looking pretty worn down.

Auril reaches out and touches Rhogar with a frosty touch (28 to hit, 6 cold damage, so 3 with resistance) and he can’t take reactions until the start of his next turn.  Auril then uses Misty Step and appears 30 feet to the north and then flies further north and disappears behind the rock formation. (Misty Step does not provoke an AOO)

Rhogar and Gorrah are up

Initiative: Round 4 - Krom (76/94), Chill (63/63)+10, Auril, Rhogar (76/87) Bless -7 & Gorrah (17/17), Frost-B, Kazri (54/104) Bless -7 & Oli (32/42) Bless -7, Frost-A

"Tch! Accursed Goddess!" Rhogar growled out after trying and failing to seize a thread of magic and seal the Goddess movement. But as the stiffness and chilled joints quickly left his system, he half-staggered his way to a new position for some measure of cover (or so he hoped!) from the goddess future attacks.

"Krom's giant has almost been felled. But, stay on your toes! The goddess has scarpered off somewhere to the north." He warns the others, then unleashed another devastating bolt of lightning from the staff, nearly depleting it of most of its energy. But while he's doing this, Gorrah has swooped around to the back of the giant's head, and at Rhogar's mental signaling, aimed to sting it in the neck, hopefully taking at least one deadly obstacle!

Movement(Gorrah): To 5ft north of Frost Giant(A).

Movement(Rhogar): Using full 30ft to get to southern side of boulder to the south of Rhogar's current position.

Action(Rhogar): Cast from Staff (5th level)Lightning Bolt at Frost Giant(B). Dex Save(DC 16) to take half of 40 lightning damage.

Bonus Action(Rhogar): Command Gorrah to take the attack action.

Action(Gorrah): Sting of Justice to Frost Giant(A)!
(Melee, Lethal, Poison)Sting - Attack: 23 For 8 Magical Piercing. Con Save(DC 16) or become poisoned for 1 Hour. If failed by 5 or more, creature falls unconcious and remains that way until poison ends.

Giant A Con Save - 28

Rhogar blast of lightning strikes the Giant (B) in combat with Krom and his hair frazzles and smoke emits from his burned body as it falls to the ground dead.

Gorrah stings the Giant (A) in combat with Kazri but it is not enough to finish it off.  It also resists the poison.

Kazri and Oli are up

Initiative: Round 4 - Krom (76/94), Chill (63/63)+10, Auril, Rhogar (76/87) Bless -7 & Gorrah (17/17), Kazri (54/104) Bless -7 & Oli (32/42) Bless -7, Frost-A

Oli follows Rhogar and stay in a guard position to his left, looking at where Auril is.

Kazri hopes to finish up Frost A, so that Chill can finally get off the rock that he has perched himself on, and go help Rhogar. (She does not know that Auril booked)

Attack1: 25 Damage: 10

Attack2: 30 Damage: 12

(Remembered to use Bless)

Kazri's attacks are enough and with the first slash of her sword she cuts the frost giant down and it topples over dead.

Chill and Gorrah can see where Auril is as the line of sight is there but she has 3/4 cover so +5 to her AC for a ranged attack from Chill.

Kazri and Krom would have no idea where Auril is.

Rhogar and Oli know where she was last seen going behind the rock. Now that they are behind the rock they would not be able to see if she moves.

As a reference I have labeled the heights of some of the broken rock in the area.

Krom and then Chill are up

Initiative: Round 5 - Krom (76/94), Chill (63/63)+10, Auril, Rhogar (76/87) Bless -6 & Gorrah (17/17), Kazri (54/104) Bless -6 & Oli (32/42) Bless -6

As Rhogar’s bolt of lightning finishes off the giant, Krom grins as the creature’s massive form collapses into the snow. Noticing that the other giant has also been dealt with, the dwarf nods in grim satisfaction.
“Where is the Frostmaiden?” Krom asks, scanning the area and finding no trace of the goddess. “We’ve dispatched your servants, now it’s your turn!” he bellows. “Show yourself! Or are you afraid of four mortals?”
After chanting a hymn of evocation to mend some of Kazri’s wounds, Krom raises his shield and strides toward Rhogar, ready for whatever comes next.

Action: Ready action (if Auril appears within 60ft from Krom, I'll attack her with the Ring of the Ram spending 2 charges) - Attack: 15 Damage: 23 
Bonus action: Healing word at 2nd level on Karzi. She heals for 6
Movement: 25ft East from my current position

Chill quicky looks around while he's on his perch and has noted where Auril has moved to.  With the frost giant out of the way he turns his attention to her.  She thinks cover with help her but she doesn't know Chill is a sharpshooter and her cover means nothing to him. 

He calls down to Kazri "She's behind a rock formation to the east" and points where he sees her.

He then takes steady aim and fires.

Game log 12 to hit (reroll 1 damage die for piercer) 26 damage

Krom heals Kazri and then strides east towards where Rhogar is wary for Auril.  But as he moves and can see further around the Mythallar he sees no sign of her.

As Krom moves Auril suddenly takes a Misty Step 30 feet west and closer to Chill.

Chill has to suddenly refocus where his aim is pointed as Auril has moved and misses his shot.

Auril then launches a ball of cold energy at Chill (To hit Nat20, critical hit! for 32 damage). ((I'll halve the damage as I assume Chill will use Uncanny Dodge as a reaction.  With resistance that's down to 8 damage))

Auril then flies forward and ducks behind the rock NE of Chill.  Kazri and Gorrah would also see this but she is out of their sight behind the rock now.

Rhogar and Gorrah are up

Initiative: Round 5 - Krom (76/94), Chill (63/63)+2, Auril, Rhogar (76/87) Bless -6 & Gorrah (17/17), Kazri (60/104) Bless -6 & Oli (32/42) Bless -6