Katia, that was standing right by the door, had to practically jump away from the sadden Harley's attack at the innocent piece of stone. When the door simply opened to the mighty kick, she looked in from behind the goliath's back. "A room, with the stairs," commented she for others farther behind. "Looks empty."

If Harley did not rush in, Katia would carelessly walk in to look around.

Once his healing ministrations were finished,(I.e. Anyone else needing healing roll it/tell me) Malik saddles in with the group.  The old man tries his best to be Second to the Last, in an effort to be relatively safe given his frail form and old bones.  "Best keep an eye for slick n' slide stairs.  Ya can fall so fast you crack you skull. I ant good at slurping your brains back in children."

6Perception for glancing about the room. Can do investigation if preferred but I'm glancing around rather than trying to examine anything

Red Chanter will slowly look around the room for any sings of hidden danger (traps, etc.) and look closely at both doors for same.

Perception: 17

GM Screen:

The stairs open almost immediately into a ten-foot high chamber. The heavy, blue stone walls of the room dampen the cold and the howling wind outside. Still, the temperature remains well below freezing. Wall sconces enchanted with continual flame spells hang from the walls, granting bright light. An inscription in what looks like Draconic runes is carved into the east wall.

The noise from the tumultuous entry has apparently drawn attention. Immediately, two animated suits of armor appear through the southern doorway (note the map compass, that’s left). The empty steel shells clamor as they move, heavy plates banging and grinding against one another like the vengeful spirits of fallen knights. They raise their gauntleted fists to attack!

Init (bold may act): Katia, Harley, Red, Shagar, armor, Malik, Daelnar

Shagar Hearing the clanking and remembering that there are animated armor in here will try to move down to get a shot. Towering over her Tabaxi companion she will take a shot at the upper armor

Attack: 23 Damage: 6

Katia absolutely did not expect that attack and reacted instinctively with the spell that have not failed her so far even once:

Wild Magic: 4 if failed: 76

Chaos Bolt Attack: 21 Damage: 6 + 1  (Lightning damage) at the closest armor suit

Harley moves down into the chamber and smiles at the clanking noises. 

"Duck," she calls to Katia, sending a pair of handaxes flying towards the two suits of armour.

Attack: 12 Damage: 7

Attack: 25 Damage: 10

As the larger, sturdier members of the adventuring party file in, Red Chanter backs into the corner and lets out a string of oaths that really hurt the nearest construct's feelings.

Vicious mockery WIS save DC 13 or take 4 psychic damage (which it's likely immune to now that I think about it) and have disadvantage on its next attack roll.

"Harley! Just pretend they're doors!" she shouts adding 1d6 BI to her companion's potential for damage.

Shagar Hearing the clanking and remembering that there are animated armor in here will try to move down to get a shot. Towering over her Tabaxi companion she will take a shot at the upper armor.  Her arrow plunks harmlessly off of the heavy armor (miss).

Katia absolutely did not expect that attack and reacted instinctively with the spell that have not failed her so far even once.  A minor lightning bolt arcs across the space (at blue), dancing across the armor (hit).

Harley moves down into the chamber and smiles at the clanking noises.  "Duck," she calls to Katia, sending a pair of handaxes flying towards the two suits of armour. One strikes the armor and causes a helmet to smash into the wall.  After a moment it floats back into the air and rejoins the remainder of its suit (one axe hits).

As the larger, sturdier members of the adventuring party file in, Red Chanter backs into the corner and lets out a string of oaths that really hurt the nearest construct's feelings. "Harley! Just pretend they're doors!" she shouts.

Armor Will DC 13: 7  The armor falters, seemingly wounded by the insult!  (You're correct that it's immune to the damage; however, I rule it can still be subject to the accompanying, non-psychic disadvantage).

Init (bold may act): PC’s, armor

This time Katia did not try to attack the suits but to put some distance between that monsters and herself.

Disengage and run to Red.

Harley rages at the armour, quite pleased to have a chance to pull out the massive greataxe that hasn't been used in a while.

Attack: 11 Damage: 15

 BI: 1

Slinging the bow across her back Shagar pulls her Pike out. Stepping down in front of the green armor and using the full 10ft distance takes a jab at it. 

Attack: 21 Damage: 12

Seeing the trouble everyone is having landing a blow on the armor, Red Chanter whistles a ditty she used to sing while playing hide and seek as a child (she was a terrible sport). Suddenly the suits of armor begin to glow faintly. Hopefully it'll stick.

Faerie fire (casting well beyond the door so it just hits the enemies) DEX save DC 13 or they start glowing.

Got lost in the shuffle a tad; but I think malik has round 1 turn still.

Old Malik misses a beat and reacts to the sounds of a scuffle, magic and yelps of combat.  Hot foot slide shuffling over through the ice sliding over behind Daelenar, Malik slips and slams his cane down to catch himself-opts to go with it and the obsidian orb flashes into a bright violet light the ice below the Armour shimmers as a circle of light appears for a moment prior to a pillar of violet light enraptures the entity.

Sacred Flame. DC 13 vs 8 (Blue closest armour)

This time Katia did not try to attack the suits but to put some distance between that monsters and herself.

Harley rages at the armour, quite pleased to have a chance to pull out the massive greataxe that hasn't been used in a while. The armor’s helmet flies up into the air to avoid the blow, then drops back into place.

Slinging the bow across her back Shagar pulls her Pike out. Stepping down in front of the green armor and using the full 10ft distance takes a jab at it. Her blade pierces the metal, leaving a gaping hole in the shoulder.

Seeing the trouble everyone is having landing a blow on the armor, Red Chanter whistles a ditty she used to sing while playing hide and seek as a child (she was a terrible sport). Suddenly the suits of armor begin to glow faintly. Hopefully it'll stick.

Blue Dex DC 13: 8 (failed, attack rolls against it gain advantage)
Green Dex DC 13: 1 (failed, attack rolls against it gain advantage)

Old Malik misses a beat and reacts to the sounds of a scuffle, magic and yelps of combat. Hot foot slide shuffling over through the ice sliding over behind Daelenar, Malik slips and slams his cane down to catch himself-opts to go with it and the obsidian orb flashes into a bright violet light the ice below the Armour shimmers as a circle of light appears for a moment prior to a pillar of violet light enraptures the entity.

Blue Dex DC 13: 16 The armor ignores the light!

Daelnar stays back, cheering the rest on!

The blue armor, still tarnished by Red's mockery, pounds its gauntlets against Harley.  The green armor moves forward.  It brings its clenched gauntlets down upon Shagar while simultaneously kneeing her in the stomach. 

Blue Attack 1 @ Harley (disadvantage): 11 Damage: 4

Blue Attack 2 @ Harley: 23 Damage: 7

Green Attack 1 @ Shagar: 18 Damage: 3

Green Attack 2 @ Shagar:  12 Damage: 6

Init (bold may act): PC’s, armor

Wild Magic: 16 if failed: 5

Attack at blue suit: Fire Bolt Attack: 20 Damage: 5

Pivoting through the open door, back up the steps and outside, Red Chanter decides to try her luck and fires a crossbow bolt, still focusing her attention on the blue armor.

Crossbow - Attack: 20 Damage: 10

If the blue armour is still up and glowing, Harley attempts to strike it again, angry at missing the first swing.

Attack: 15 Damage: 6

Shagar isnt quite quick enough to dodge the first blow completely but manages to step aside for the second and with a roar that would make her Orc ancestors proud jams her pike into the green armor in front of her.

Attack: 18 Damage: 9

(Oof!)