Zane bolts back towards the other statue and positions himself directly opposite of Lana, then tries to stab the statue where it hurts. 25 to hit, 5 piercing damage.

Having moved five feet closer to the door previously, Rel rushes in now and moves through the sphere of silence east and south to a spot ten to fifteen feet east of Bellamy, just outside (south of) the silence, lining up a shot on the remaining statue.

Unfortunately, this time she misses completely.

Eldritch Blast to hit:  8 (natural 1)

Cursing in Undercommon, Rel prepares to react to any attack (she has reaction spells and may use them depending on circumstance).

Tex and Lizzy turn their attention to the last standing statue and move to surround it with Lana and Zane. Lizzy will deflect the statue’s first attack on any target other than herself.

 The group swarms the remaining statue, preparing for a beat down. 

Lana and then Bellamy are up

Bellamy's magic removed the pain and Lana breathed easier. She moved the mark over to the last standing statue and shot again.

Action: Crossbow Attack: 20 Damage: 10 + 1 (psychic damage) + 1 (Hunter's Mark)
Bonus action: moving Hunter's Mark

As the onslaught continues, this statues resolve is unmoving so far. The silence of the battle, unsettling.

Bellamy hurls another fire bolt at the statue

Hit: 9

Rolled in game log

I assume this is a miss

End of Turn

The fire bolt sails wide of the statue before smoldering to nothing in mid air. The statue takes a large swing of its sword at Zane, barely scratching his forearm but cutting deep all the same, the statue and then attempts to flee towards the eastern door.

Zane concentration check for Silence: 10, holding on to it barely.

Zane opportunity attack: 19 to hit, 9 damage.

He follows the statue, placing himself to the west of it once more. He readies an attack for when the statue is surrouned/flanked again. But misses completely (double 1... !!)

As the statue runs away, Tex throws a spear at its backside (AoO).

Lana's AoO: Attack: 24 Damage: 6 + 6 from the Mark.

As the statue begins to seemingly retreat, Zane and Lana take advantage of an opening and each strike their foe with precision. Tex attempts to throw his spear but it does not connect with the statue. 

Rel mirrors the statue's movement, NE five feet and then E twenty-five feet, continuing with her black beams of energy with inspiration from Zane.

Eldritch Blast to hit statue:  14 + 1 from Bardic Inspiration = 15
Eldritch Blast damage:  11 (force)
Repelling Blast:  in case of a hit, she is not sure if the statue is fleeing to the eastern door or the stairway, so she does not push it either N or E.

Tex pursues the statue and throws his spear at it while he runs after (West of it). Then he commands Lizzy to continue her attack, too.

Rel is thrown off by the movement of the statue and her Eldritch beam just barely misses. Tex takes off in pursuit with Lizzy, throwing his spear as the lizard tears at the statue with its claw. Both causing pieces of stone to fall from the animated being. 

Lana and then Bellamy are up

Lana winced every time another piece of rock dropped to the floor now at full sound but all everyone could do now is to attack the stone enemy. She sent yet another bolt:

Action: Crossbow Attack: 13 (Not sure it hits, but in case it does: Damage: 7 + 1 (psychic damage) + 5 (Hunter's Mark)

Bellamy hurls a fire bolt at the statue

Hit: 17 Damage: 4 fire damage

Lana's crossbow bolt misses her mark and sinks into the northeastern stairwell. Bellamy's firebolt does find its mark, hitting the statue and bursting in bright light as more rubble thuds onto the floor. The statue then slashes its sword into Tex as blood spatters the fancy rug, it then continues it's path towards the eastern doorway.

As the statue’s weapon seemingly unstoppable bears down on Tex, he reflexively causes his shield to extend in all directions doubling its surface and blocking the blow.

Zane will take the opportunity attack. 25 to hit, 9 damage.