Edgar will also fly by and help anyone she can help.

As you take down one giant and converge on another, three more appear from the forges, where the molten iron is flowing from the foundry. One after the other, they drop their forging tools and draw their greatswords. 

The hexed giant (with whom Matrix and Flint are engaged) doesn't like being flanked. He disengages and moves under the gantry, daring the duo to come follow him. 

Most of the giants spend their time repositioning, and reacting to the inexplicable fact that they are being assaulted by such a small band of puny intruders. 

One of the giants (the one that had been distracted earlier by Don) takes cover behind one of the superheated smelters, picks up some more molten iron, and throws it at Ink. <Kill the mages first! Then find Zaltember.> He shouts. 

Attacking Ink: 13 Damage: 20 bludgeoning plus 16 fire

 The last giant comes in to attack Crownsguard, stepping over the body of his slain compatriot to do so.

Attacking Crownsguard: 31 Damage: 54 slashing
And again: 27 Damage: 34 slashing

// Players up! //

Flint throws his magical hammer at the giant, rather than engaging.

Hammer of Moradin Attack...hits! Dealing lightning and bludgeoning damage 

The hammer immediately returns to Flint’s hand.

He then reaches out to Crownsguard, restoring the construct to functionality with a word of mechanical healing.

Healing: 7 hp

Ink feels the haste spell fade away and looks down at the damage.... "Crap." He turns to see the escaping young giant, muttering, "Too far."

Seeing Crownsguard slowly come to, a smile crosses his face... He yells, "We should try to run out of here, but we might need help with that, so...." 

Ink reaches out and waves of transmutative energy slam into Crownsguard. Ink calls out, "Don't fight it!" The gears and panels reshape... Crownsguard starts to impossibly grow in size... Small rubber and silica tube begin to protrude from all over his body. As the magic finishes, a Giant Ape, as mechanical as it is living, lies where Crownsguard once was.

Ink yells, "Get up and defend yourself!"

// Ink cast polymorph 

Ink looks at Quill - she immediately "buzzes the towel" of the closest fire giant with a flyby and pulls up and out to safety closing in on Ink.

// Help action, advantage on next attack to that fire giant. 

Your immediate surroundings: 

The air ripples with heat. The clanging sounds of the forges have ceased, as have the billows pumping air into the black basalt smelters. Still, there is a veritable river of molten iron that dominates the room: a 60-foot wide, 160-foot-long stone trough. The molten iron flows from the smelters towards the now-abandoned forges east of this room.

Between the soaring ceiling and the floor hangs the iron gantry, which runs around the perimeter of the room. It is bolted to the walls, and stabilized with taut chains bolted to the ceiling and some pillars. The "prince" that the other giants were speaking of is running south/east along the gantry towards an opening in the south wall that seems to lead to another room. It is difficult to see what's in the this room, through all the heat waves.

Lastly, 20-foot-tall double doors, made from riveted iron plates, stand in the north and south walls of this room. Both sets of doors are currently closed.

Don attacks the hexed giant again.

Hex: 1 Necrotic (Strength Check Disadvantage)
Attack: 19 Damage: 5
Attack: 16 Damage: 14

Bless Advantage if needed: 4
Bless Advantage if needed: 4

He then runs toward ink.

Edgar then continues to harass CG's target doing flyby's to help him out.

Matrix will run to flint's left, staying near to aide in pickup and takes the dodge action after reloading.

Crownsguards is running and grabbing Flint and Matrix

The giant takes an opportunity attack as Crownsguard-the-Ape flees with Matrix and Flint in his grip. 

Opportunity Attack: 27 Damage: 29 slashing

The giants reposition, all the while launching molten iron at their chosen targets. 

The hexed giant approaches cautiously, understanding that something magical is happening to him and not wanting to be caught off guard. He trails behind Crownsguard, taking a defensive position (dodge action). Any attacks targeting the hexed giant this round are made with disadvantage.  

Crownsguard, Matrix, and Flint all have 1/2 cover (+2 AC) against ranged attacks due to the heavy amount of machinery and infrastructure here in the foundry. Anyone on the gantry still has 3/4 cover.

Attacking Crownsguard: 12 Damage: 13 bludgeoning plus 14 fire

Attacking Flint: 17 Damage: 16 bludgeoning plus 16 fire

Attacking Matrix: 18 Damage: 17 bludgeoning plus 14 fire

Attacking Ink: 19 Damage: 18 bludgeoning plus 13 fire

The "prince" flees into the room to the south, towards the stairwell.

// Players up! //

deflect missile? 15

Matrix will enter dodge mode

Crownsguard will enter dash mode!

Flint throws his magical hammer at the closest giant, and also uses his spiritual weapon to put the hurt on. As he attacks with his spiritual weapon, he moves it further south to follow Crownsguard's intended path.

The magic hammer returns to his hand like magic after he throws it.

Attack: 21 Damage: 14 force

Attack: 22 Damage: 12 bludgeoning & lightning

Don dashes after the rest. 

Ink gets out of the way of the incoming slag and dashes towards the entrance they came in by.

Meanwhile, Quill does a flyby of the fire giant being harassed by the spiritual weapon providing help on the next attack against it before pulling up out if reach!

Don commands Edgar to cast Light onto the nearest giant to him trying to cause his head to light up. He then yells out mimicking the prince's voice, "Run! Can't you see his head is gonna explode."

Attack for Edgar: 4
Deception: 24

One of the fire giants points to the others. <You two! After them! You two! That way!> 

Two of the fire giants (including the one Don hexed) run north through the doors on the ground floor level, and out of your field of vision.

Two more run south, in the same direction the prince is running.

The fire giant who gave orders stands picks up more molten iron, and he and another giant focus their fire on Crownsguard the giant mechanical ape.

Attacking Crownsguard: 16 Damage: 13 bludgeoning plus 27 fire 

Attacking Crownsguard: 12 Damage: Unable to parse dice roll. bludgeoning plus 21 fire  

// Players up! Map is updated! //

(Bludgeoning damage for that last attack: 20)