Deftly dodging the fireball as best she can, Bryony returns fire with a well-aimed arrow. It glances off, doing some damage to it, but not as much as she'd hoped (resistance to piercing damage.)

Quinn leaps up and slams the retreating skull with his mace. It shatters – pieces flying everywhere –and the unnatural flames are extinguished.

The flameskull is defeated, but three zombies remain.

Jurgen, Boona, and Ruven may act next.

Badly burned, Ruven picks himself up off the ground, brushing himself off carefully and wincing. Almost as an afterthought, he glances up, sending a ball of flame at the closest zombie.

Attack: 16 Damage: 10

Ruven stands up and blasts off part of the shoulder of the dwarven zombie advancing on Quinn.

Quinn may still act.

Jurgen and Boona may also act next, although they are some distance away from the remaining zombies. Jurgen might be able to hop down into the channel and squeeze in next to Quinn to engage in melee this round, but Boona cannot reach any of them without a Dash under the bellows and around the far side of the wheel (but she could pull of a ranged attack this round if she chooses to.)

Quinn turns to face the dead zombie that Ruven just hit. He targets the abomination as his quarry, he steps forward and strikes at it with Lightbringer. 

15 to hit for 14 damage (9 + 3 bonus against undead + 1 hunters mark + 1 colossus feat)

Boona charged along the top and into the midst of the dead things giving them a bigger target to attack rather than her friends.

( Dash)

Jurgen will move Draco up next to Quinn to provide some assistance (and DIS ADV on on attack to Quinn) and will attack the skull (23 to hit for 3 force damage)

Jurgen will attack the skull with is crossbow (28 - NAT 20 for 15 damage and it is slowed by 10')

(The skull is down. It's just the zombies now.)

Quinn takes down the wounded zombie. (But, of course it tries to return to undeath: DC19 CON Save: 16 )

Boona charges, scooting under the massive bellows to the other side of the furnace and wheel, where she jumps down into the channel again behind the zombies.

Draco tears into one of the two remaining zombies (both rather beefy compare to the others.)
Jurgen, seeing Quinn smash the skull, changes his mark to the zombie Draco attacked, and sinks a bolt through its bloated torso. It's in relatively bad shape.

The rear zombie turns its attention on Boona, while the wounded one goes after Draco:

Zombie #8 Slam Attack vs. Boona: 14. Hit: 4 bludgeoning damage.
Zombie #1 Slam Attack vs. Draco: 6. Hit: 2 bludgeoning damage.

Everyone may act!

Hobbling slightly, Ruven takes aim at the zombie in front of Draco with another blast of fire.

Attack: 15 Damage: 3

Boona facepalms the clawing zombie away then brings down her maul.

Attack: 22 Damage: 11

Boona slams the rear zombie as Ruven hurls a blob a flame at the one next to Quinn and Draco. Both are damaged but continue to attack.

Bryony, Quinn, and Jurgen/Draco may act next (melee will be difficult for all but Draco short of climbing out of the channel and circling around, but there are ranged opportunities for all.)

Jurgen will move toward the zombies, firing as he progresses. (Crossbow attack to the zombie in front of Draco - 14 to hit with 13 damage)

Draco will attack the zombie next to him (25 to hit for 3 damage)

Bryony will take aim at a zombie with her shortbow.

Shortbow Attack - 8 to hit, which is probably a miss but 10 damage in case it hits

Sneak Attack Damage - 3

Jurgen takes down the zombie with a well-aimed bolt. It tries to pull itself up again. DC18 CON Save: 13

Draco leaps over it and onto the next one, tearing into it.

Bryony makes a sloppy shot from her bow, but nevertheless hits it. (AC 8!) Her arrow does significant damage to its neck, but the dead miner somehow keeps going.

The zombie again goes after Draco:
Slam Attack vs. Draco: 36. Hit: 6 bludgeoning damage.

Everyone may act!

(Note: that's a "6" not a "36" but I can't edit it. The Zombie misses Draco.)

"Stupid zombie. Why don't you stay dead?" Bryony yells, releasing another arrow at it.

Shortbow - dirty 20 to hit, 8 damage

Sneak Attack - 2 damage

Boona frowned at the corpses as they refused to fall.

Attack: 24 Damage: 14

Bryony takes down the last zombie. It tries to get up (DC13 CON Save: 10) but Boona makes sure it doesn't (DC19 Con Save: 16)