Wynn gives the side room a quick glance but is distracted by Norbus, who has apparently refused to follow the group. Wynn draws his rapier and keeps an eye on Norbus. If the dwarf attempts to block their only means of escape, Wynn will try to stop him.

[OOC: Ready Attack action if Norbus tries to lock the party in.]

Proserpina charges forward and attacks OJ2 (assuming when you say "sliding down the wall" that it's within reach) with her maul.
Attack: 18 Damage: 9

If they are not within range, then she will move forward 10 feet and ready an action to attack whichever ooze approaches first.

Poco step’s within 15ft of OJ2 along the wall and casts thunder wave and goes back 10ft towards entrance. “Everyone I’m casting a spell at this one here. Stay behind me until it’s finished. “

20

As a bonus action, Poco whistles to Rohani and she has inspiration. 

if thunder wave hit-19

OJ2 Con Save: 20 Passed for half damage.

Between Proserpina's splattering maul attack and the thunderwave, the jelly on the wall takes 18 damage.

Waiying for Rohani and Dargrimm, although Dargrimm, hasn't posted in a while.

With a grin, Rohani leaps toward the damaged jelly on the wall and swings her greataxe.

Attack: 10
Damage: 12

(( Rohani will save the inspiration from Poco for another round ))

The slashing damage from the axe does not harm the jelly. What it does do is split the large jelly into two medium jellies.

Dargrimm casts sacred flame on the jelly on the ceiling for 3 damage.

Norbus looks at Wynn and says, "What? Get in there and kill those things! I said I'd come along but I'm not a warrior!"

[[He did move up with the group, just is hanging a little back.]]

The Large jelly moves towards the entrance 10 ft and releases from the ceiling, landing on the floor with an audible plop.

Rohani dodges one of the smaller jellies crude attack, while the other strikes Syr Proserpina, bludgeoning for 9 damage while acidic slime seeps under her armor doing 4 acid.

Wynn spares Norbus another glance, then advances on the Large Jelly. He whips his rapier at the Jelly with an arcane flourish and casts Booming Blade.

Attack: 16 Damage: Unable to parse dice roll.

Wynn uses his bonus action to Disengage and move back to where he started. NOTE: If the Booming Blade attack is successful, and the Jelly willingly moves 5 feet or more, it takes 1d8 thunder damage, and the spell ends.

If needed, here is the Thunder Damage: 1

Re-roll for Rapier damage as something went wrong in the post above.

Damage: 11

Poco steps up to OJ1 and casts thunder wave and then goes back to the entrance. 
18

5- damage 

OJ1 Con Save: 17

The ochre jelly takes 7 more damage and is thrown back against the altar.

Syr Proserpina and Rohani (and Dargrimm) are up.

As a reaction, Proserpina would have used "protective wings" to add +2 to her AC against the Jelly's attack.

• If that caused the Jelly to miss, then she would attack it with her maul: Attack: 13 Damage: 8
• If it still hit, then she uses Lay on Hands to heal 10hp.

Rohani's mouth fell agape as the slice of her greataxe seemed to do more harm than good against the jelly. Grumbling under her breath at the resilience of these creatures, she slings the axe over her shoulder and enters rage with a shout. Curling her hands into fists, she lunges forwards, attempting to punch the jelly in front of her.

Attack 25  Damage: 7 (5+2 from Rage)

(( I THINK rage is applied for unarmed strikes, but if I'm incorrect, then the damage should just be the 5 ))

Proserpina's protective wings did prevent the damage, however her counterstrike misses. Rohani's fists seem to generate enough force to really scramble the fibrous structures in the jelly, hurting it quite badly.

The large jelly slides from the altar back towards the door. A loud noise is heard as the booming blade takes effect.

Dargrimm utters a prayer and his hammer is engulfed in the fires of the forge, he strides up and slams the ochre jelly. Attack: 24 Damage: 12