Quinn watches the rock folk to see how they respond to Boona rejoining the crew. 

"If we gotta go down that way, maybe we can find some ancient Dwarven art to guy our way into an audience with this Honna.

Let's keep investigating this room to the west. Boona, watch out for the sets of armor in the room. Somethin' ain't right about them." 

Quinn proceeds back into the room and slowly approaches the door on the southern wall. He'll stop and listen for any noises on the other side of the door.

Perception check: 21 

Fergus:

”Right, we have no quarrel that I know of with this art collector—let us focus on saving the townsfolk first and then cleaning the temple if possible,” agrees Fergus, going back to where he was before in the sparring room.

Boona turns and climbs back up the stairs. Quinn follows suit, and watches behind him as the two boulder guards roll back into roughly spherical stones, indistinguishable from the other boulders in the long-ago cataclysmic collapse of the passage beyond. 

They reenter the old sparring chamber, and approach the door to its south. Fergus soon joins them. (Are others following?)

Quinn listens carefully at the door. He hears... something? A bit of wind, perhaps, dust against stone, an airy whisper, maybe, almost resembling a chuckle...

Jorzu 

"Back in we go" chuckles Jorzu. He moves back into the sparring room and heads towards the rack of armour figuring the door can only fit so many people around it.

He moves to within 10ft of the armour, heeding Quinn's warning, and peers closer. Once the door is opened he turns his attention back to the group.

Investigation 10

"Rútína fyrir taktík liðsins," announces a hollow voice from the armor stand in the northeast corner of the room, before Jorzu is halfway across the floor. (Jorzu is still invisible, correct?)

For those of you in the room who understand Dwarvish (Quinn):

Three empty suits of armor leap off the stand and begin swinging. Roll initiative!

Initiative:
 Speaking suit of empty plate armor: 17
 Two other empty suits of empty plate armor: 20

Fergus Initiative:  18

Boona Initiative- 1

DM: Does the voice within the armor sound like a living creature? Or does it sound magical, ghostly or ethereal?

Quinn focuses intently on the door to the south. He's just about to relay information about the whispers he thinks he heard behind the door when the silence is broken by the clattering and clanking of the armor and the Dwarven commands. 

"The armor! They must be magical dwarven training constructs.'

Quinn arms Lightbringer and steps forward. He focuses his gaze on the armor to the far right. Quinn marks it as his target.

"They're forming up for a Squad Tactics Routine."

Quinn rushes in and attacks the marked armor.

Move: Step forward and then rush armor on the right. Using all 40 ft of movement if necessary

Bonus Action: Cast hunter's mark using favored enemy trait, NOT a spell slot.

Attack 1: 21 to hit for 15 damage (11 (rerolled using savage attacker feet) + 5 hunters Mark)

Attack 2: 18 to hit for 18 damage (10 + 5 colossus slayer + 3 hunter's mark)

OOC: 

1. Hunter's Lore: Hunter's mark reveals any vulnerabilities, resistances or immunities that the target has.
2. Multiattack Defense: When a creature hits you with an attack, that creature has Disadvantage on all other attacks against you this turn.

Jorzu 

Initiative 4

Quinn rushes forward and smashes the plate armor on the right with his glowing mace. It takes both swings, but he manages to completely collapse the helm and render the magically-animated armor inert. It clatters loudly into pieces on the stone floor.

Its companion spins and attacks Quinn, the heavy plates banging and grinding against one another ponderously. As it is unarmed, it attacks with its empty metal fists:
Slam Attack #1 vs. Quinn: 17 Bludgeoning damage: 8
Slam Attack #2 vs. Quinn: 22 Bludgeoning damage: 8. (If the attack #1 hits, here is disadvantage roll for the second attack per Multiattack Defense feature: 13 )

The armor that spoke moves with more grace. Indeed, it does not clank forward heavily but rather floats silently an inch off the ground as it levitates smoothly forward. (The voice sounded like no living creature, but indeed: magical, ghostly, ethereal – all three of these adjectives are fitting. Quinn can also sense that it is probably immune to Poison, Psychic, Charmed, Deafened, Exhaustion, Frightened, Paralyzed, and Petrified.) It moves directly toward the invisible Jorzu, evidently perceiving him effortlessly. And unlike its comrade, it carries a big sword.

Arcane Sword attack #1 vs. Jorzu: 11 Hit: 6 Slashing damage plus 7 Force damage.
Arcane Sword attack #2 vs. Jorzu: 24 Hit: 6 Slashing damage plus 7 Force damage.

Boona, Fergus, and Jorzu may act next. (Jorzu, can you nudge that initiative roll?)

Bryony and Jurgen, out in the hallway, hear the ruckus next door. They notice that the boulder creatures to the south, now indistinguishable from ordinary boulders, do not visibly react to the loud battle.

Fergus:

Alerted to the presence of possible ghostly foes, Fergus is nonetheless taken aback by their sudden attack.  Pulling out his harp, he plays a series of magical notes, with two of them forming a strong dissonance and merging just as they reach the floating armor!

Radiant Notes (Starry Wisp):  Attack: 12 Damage: 6

Bryony hears the commotion, and she runs up the stairs and into the side room, brandishing her weapons.

Initiative - 6

"Right behind you Byrony", Jurgon says as he also runs into the side room with Hero.

"What's going on now?"

Boona charged at the nearest suit of armour happy to have something she felt far less conflicted about bashing.  Karst charged forward to flank the armour, assisting her.

Attack: 25 Damage: 15 + Smite 10 Radiant

Attack: 13 Damage: 14 + Smite 4 Radiant

Bryony tries to get behind the floating armor with the big sword. She hits it with her blades, even though it feels a little silly trying to stab an empty suit of armor.

Shortsword: 17 to hit for 7 piercing damage (target is Vexed if hit)

Dagger: 10 to hit (no Vex) or 18 to hit (Vexed) for 6 piercing damage (Nick - attack is part of action and not bonus)

Sneak Attack: 17 piercing damage if either attack above hits

Jorzu 

"Wooop" followed by "Aaaek" Jorzu squeals as the arcane swords barely misses. He ducks and weaves and ends up next to the lead suit and in front of the middle one. "Uh oh" he says as he quickly crushes a bead in hand. Yellow mist surrounds his invisible form. He reappears close to Fergus before firing off two orbs of invisible energy. "That was close" he confesses to Fergus.

M - moves to the square directly to the E of the main suit, being careful to not leave its range. This should put him within 5ft of all the armour suits.

BA - casts Misty Step with Taunting Step rider. Teleporting to as close to Fergus as 30ft will take him.

((Taunting Step - Creatures within 5 ft. of space you left must succeed on a WIS15 save or have Disadvantage on attacks against creatures other than you until the start of your next turn))

A - casts Eldritch Blast at the boss suit

Blast Attack 1: 15 Damage: 10

Blast Attack 2: 22 Damage: 9

Fergus' tune hits an intentionally jarring note as it rattles the floating suit.

Boona charges forward, nearly tripping over invisible Jorzu, swinging her massive maul at the levitating armor, but the empty construct manages to keep her maul at bay with its sturdy shield.

Jorzu reappears. Recalculating his tactics slightly (as Boona has positioned herself in the space he was eyeing), Jorzu ducks under Boona legs to get behind the suit, taunting both opponents. DC15 WIS Saves: 8, -2 Vanishing again and reappearing on the steps behind Fergus, he unleashes a pair of arcane orbs. Unfortunately, neither seem to penetrate its thick defenses (AC 20!)

Bryony rushes in (Cunning Action to Dash.) She races right up to the floating armor, but, like Boona, cannot seem to get past its formidable defenses.

Jurgen and Hero follow Bryony. (They can dash to get up into melee with the floating suit if he wants, but they cannot attack this turn.)

Quinn is up next!

Quinn winces and groans as the second attack finds its mark. Quinn snorts and spits a mouth full of blood. He snarls, marks his prey and erupts.

Bonus Action: Transfer Hunter's Mark to the armor that attacked Quinn

Attack 1: 19 to hit for 11 Damage

Attack 2: 11 to hit MISS! :(

OOC: I used heroic inspiration to reroll my second attack but failed. Hence the two attack rolls in my game log.

Quinn clobbers the awkwardly clamoring plate suit, denting it rather badly. 

It spins, still distracted by Jorzu's antics, and swings back at Quinn with its armored fist. 

Slam Attack #1 vs. Quinn: 7. Hit: 3 bludgeoning damage.
Slam Attack #2 vs. Quinn: 7. Hit: 7 bludgeoning damage.

The levitating horror is likewise focused on Jorzu, but settles for Bryony, who stands between it and him.

Arcane Sword Attack #1 vs. Bryony: 15. Hit: 7 Slashing damage plus 4 Force damage.
Arcane Sword Attack #2 vs. Bryony: 14. Hit: 12 Slashing damage plus 2 Force damage.

Everyone may act!

Fergus:

Moving a bit closer and maneuvering for a good view of the foes, Fergus plays another power chord, hoping to further damage the floating armor!

Radiant Notes (Starry Wisp):  Attack: 19 Damage: 11