The Single Minded Kuo-toa manages to stay on its feet and attacks Beegred twice:

• Bite: Attack: 20 Damage: 3
• Pincer Staff: Attack: 19 Damage: 7

The Single Minded Kuo-toa successfully bites and then pincers Beegred to a web.    

(on a 25 or less, the web Beegred stands on breaks: 4)

EDIT:  That was supposed to be a d100...  This is the correct roll:  32

Beegred finds himself grappled by Single Minded Kuo-toa's pincer.

The Exciting Kuo-toa heads directly for Orubis (arrives @D7)

DEX Saving Throw: 20

It manages to stay on its feet as it slips and slides towards Orubis.  Then it makes a bite and pincer staff attack:

• Bite: Attack: 5 Damage: 6
• Pincer Staff: Attack: 12 Damage: 8

However, the Kuo-toa fails at both.

(Start of a new round.  On a 10 or less, spiders join the fight:  96)

(Thurnir, Orubis, Beegred and Rodolfo's turns, in that order)

(Applied damage to Thurnir's character sheet.  Playing Thurnir to move things forward: 2 melee attacks vs. Pretty Derro Caster)

Thurnir pivots and stabs his rapier at the Derro that partially blasted him...

• Rapier attack: Attack: 18 Damage: 14
• Rapier attack: Attack: 26 Damage: 8

On a 25 or less, the webs beneath the Derro breaks and he falls (one ring)

• 93
• 66

(Orubis's turn)

The Derro fumbles and tries to stabilize the skeleton head perched on his shoulder, leaving an opening for Thurnir to ram his rapier through his chest.  As the life leaves the Derro, his feet slip and he slides off the rapier while falling a few feet into a web several feet below.

(Orubis's turn.  Beegred, then Rodolfo are on deck)

Orubis strikes at the exciting kuo-toa with his mace. Then raises his wooden box and a spiritual weapon appears, to strike at the exciting kuo-toa.

Attack: 21 Damage: 6 

Attack: 13 Damage: 8 

Beegred: "Ouch! Lego!"

Two sword attacks plus a dagger stab (bonus action two-handed fighting) at the Single Minded Kuo-toa that is grappling him.
If any of the attacks hit, mark the Kuo-Too with Favored Foe (ranger feature).

• Sword1 Attack: 23 Damage: 11
• Sword2 Attack: 11 Damage: 11
• Dagger Attack: 23 Damage: 3
• Favored Foe damage (only on the first attack that hits): 3

(Thanks for botting me!  I’ll be more online from here out!) 

Webs break on a 25 or less:

• 93
• 14
• 5
• 68

Orubis swings with his mace and spiritual hammer, succeeding to hit the Kuo-toa once.  It almost loses its balance as some minor webs break, but manages to maintain its footing.

Beegred ignores the grapple and stabs the Kuo-toa.  It jerks wildly and the web underneath it breaks, causing it to fall prone into webs below.  (Since already on the outer ring, just moving the Kuo-toa away 10 feet).

(assuming Beegred follows with his movement) Beegred stabs again (another to-hit in case of crit since kuo-toa is prone: 11), and again (3).

(Beegred does a total of 29 damage to the Kuo-toa!)

Heads-up:  A little retcon here...  The pretty Derro Caster is UNCONSCIOUS, he's not dead.  He will be rolling death saving throws,  unless he's finished off.  This is usually not a thing that happens, but this encounter may be a bit too easy if I don't use the full potential of these casters.

Given that, I will be honest and say that Thurnir took him out on his first blow, so the second blow crits and causes 2 death saving throw failures.  But I'm moving Thurnir down one ring as he chases the falling Derro.

(Rodolfo's turn.  The unconscious Derro is on deck.)

Rodolfo will shoot a ray of frost at whatever is closest that's not prone: Attack: 8 Damage: 6 (reducing their movement speed if hit)

Rodolfo chooses to help Orubis who is nearby.  Waiting for the opportunity to strike the Kuo-toa without harming Orubis, Rodolfo finally sees an opportunity and focuses intently on missing his gnome ally.  Unfortunately, too much effort was put into not hitting Orubis.  The ray of frost misses the Kuo-toa as well.  Past both, the ray of frost hits a strand of webs, crystallizing it.  Having lost its elasticity, the web shatters under tension.

Pretty Derro Caster makes a death saving throw: 8

The Persistent Derro Caster uses half its movement to climb upwards.  It doesn't seem to have any difficulty with the stickiness of the webs, but does struggle to keep its balance:  

DEX Saving Throw: 7

As the Persistent Derro Caster reaches the higher levels of the webbing, placing itself in a line with Thurnir and Orubis, the derro slips up and his torso presses up against a large web, sticking firmly.

(Derro is considered restrained and must use an action to be able to move again)

However, this turn it chooses to unleash a chaotic beam at Thurnir and Orubis...

DC 12 DEX Saving Throw.  On a fail, take 20 radiant damage, or half as much on a success.

• Thurnir: 19
• Orubis: 22

(Skameros's turn.)

What the ****.. I never edited the post and it showed attack 20, damage 9 initially.