Kei 

Kei shakes his head as if waking from a dream. Peri's speech followed by Gerrard's tactical plan seems to have bolstered his resolve. "A whole armory you say?" He subconsciously shifts his body to face the direction of the unexplored room. "Well, I can't let you face these abominations by yourself shorty. You'll obviously need help. Let's do it."

Peri:

Peri gives a satisfied nod. "All right then. That sounds like as good a plan as any. We'll just go see if we can talk Boko into comin' back and --" He cuts off as Bokotiger comes prowling back to them. "Ah! Here she is now! I'll pour some oil down into the pit, see if we can toast these ghouls like the iron men. You wanna set up on the back side of the rockfall? Might give us some cover?"

Gerrard:

”Yes, in the intersection behind the rockfall,” responds Gerrard, having already moved into position, “That way we have room for Mistress Boko to attack from the hallway and for me to attack around the corner…and perhaps you to attack from whatever wall or ceiling you find most advantageous, Master Peri.”

“Ready when you are,” he adds, nocking an arrow to his bowstring and looking for Peri to lure the first foe within range of his light source.

Peri carefully pours another flask of oil through the thin seam of the camouflaged wooden trap doors. It's slow-going, as the seam is relatively snug. 

(Check your positions on the map. Is this what you intended?)

Dwal waits in the guardroom, contemplating the smashed minotaur skeletons, as Bokotiger silently passes him twice. All is quiet.

Boko readies herself for a good opportunity to claw or spring, happy with the plan, and frustrated she cannot speak. But she'll try to put herself between any harm and the party, when it comes to that.

Kei 

With Peri getting set to start the party and Gerrard taking position to offer ranged support, Kei turns to Bokokitty "So it's up to you to take the front line? Well, let's see if old Kei can't help you with that." He pulls out his cittern and plays a somber tune for Boko. At the crescendo she feels a familiar tingle of a protective weave wash over her. "There you go pretty kitty." He then takes up his position further down the hall.

Kei 

Initiative 13

Gerrard:

Bow at the ready, Gerrard adjusts his position and hangs the unsheathed rapier at his belt to provide light.  Facing down the dimly lit hallway, he prepares for combat.

Initiative:  25

The party gets into position as Peri stealthily moves ahead.

Peri:

It occurs to Peri that without Dwal and with Boko in her tiger form, they'll need a way to light the oil in the pit. He lights a torch and places it on the pile of rubble. "All set?" he asks. Taking a deep breath, he creeps back up to the corner. Stealth 17

((I'll post the attacks after I see the roll.))

Silent as the undead ogres, Peri peeks around the corner and takes aim at the nearest. He fires an eldritch blast at the immobile creature:

EB #1: 24 for 9; EB #2: 10 for 4

"Ha! Come and get it, ya stinkin' heaps!" he yells, then hurries back down the hall along the wall.

Initiative: 15

Peri fires a pair of crackling energy beams at the massive dead ogre on the south side of the door (fatter than the other two.) Although it is clearly damaged by both blasts, it has a lot of body-integrity remaining. And although it runs with a cumbersome, sloppy gait, it awakens and starts moving across the chamber quicker than Peri expects.

Retreating sideways down the hallway, Peri ends his turn just over the near side of the pit. (35' back)

The three dead ogres round the corner and race down the hallway. Everyone can see them as they enter the torchlit area near the pit. (Did Gerrard have a  bow readied?)

Initiative:
Gerrard: 25
Dead Ogres: 15
Kei: 13
Peri: 8
Bokotiger: 20

Dwal hears Peri's shout, distant heavy footsteps, and the sounds of the party scrambling.

Everyone may act.

Gerrard:

Poised and ready to shoot, Gerrard first sees Peri round the corner and pulls his bowstring back.  Right behind him is the undead ogre.  Letting fly two shafts at the creature as he crouches behind the fallen masonry, Gerrard prepares to fall back as planned.

OOC:  Readied Attack action on initiative 25

Longbow shot 1:  Attack: 28 Damage: 12

Longbow shot 2:  Attack: 18 Damage: 12

Gerrard sinks a pair of arrows deeply into the chest and face of the charging dead ogre. It seems to feel no pain, but it is showing real damage.

Gerrard ducks around the corner. 

Everyone but Gerrard may act next.

Peri:

Peri continues down the hall, the big, stinking ogre corpse pursuing him. He scoops up the torch and turns to face the ogre. "C'mon, you big dumb beast! Come get me!" he yells as he waves the torch back and forth, backing down the hallway. He waits until the moment the thing steps onto the trapdoor (or tries moving around it) to throw the torch at its feet.

((Peri will prepare to throw the torch toward the ogre's feet. The goal is to just get the torch to fall into the pit, so that would be his actual target, but is hoping the torch might distract it. It looks as though the range on Improvised weapons is 20'/60', so Peri will move 35' down the corridor, into the branch with the acid(?) pit, and make his roll with disadvantage. I'll make it with no modifiers and you can decide what to apply. I guess his DEX bonus but no proficiency? 17))

Kei

Kei clambers through Boko's fur lined space and over the fallen masonry to stand just behind Gerrard. He points at the closest ogre and whispers gutteral arcane words. "Hear that you vile thing? That bell calls you home.

TtD 11 (WIS 13 save)

Kei sounds an internal bell in the advancing ogre. Wisdom saving throw: 10

...it pauses for a beat, but continues its charge.

Peri retreats to the illusion-covered pit and prepares to throw his torch.

Gerrard and Boko may act next.

Boko readies a pounce for any enemy that gets past the pit. Back legs alternating with a little tiger wiggle in anticipation.

Gerrard:

Peeking back around the corner, Gerrard fires off a couple more shots at the advancing undead.  If he has a clean shot at one of the less injured ones, he will take it, as he doesn't want to kill one and have it fall forward and spoil the *surprise*.

Longbow Attack 1:  Attack: 17 Damage: 8

Longbow Attack 2:  Attack: 27 Damage: 10

Gerrard sinks a pair of arrows into the dead ogre behind the big one, on the left. It staggers, wounded, but lumbers on. Both of the ogres in the back appear to have left their morningstars behind and approach empty-handed.

The undead humanoids charge forward.
Intelligence check - big ogre in front: 7
Ogres in back: 14, 11

...but these dead ogres must know the consequences of treading over the hidden trap doors. They specifically evade the pit by pivoting to the edges of the corridor.

That's when Bokotiger springs forward...