{{I will reiterate, some visual of the situation would help a lot. For some things i have in mind in this first round specifically it would be great to know distance between enemies and distance between them and us}}

“The whole group of brave adventures can get to the aberration in 6 seconds worth of movement though past them it is 40 feet to the back wall”

Ok so I run a campaign, play in a in person group, I’m running this, and I’m recruiting/starting tales of grif bier fear what hides beyond the walls and as such have lots to look at and so for those who roll on the character sheets please announce them on this thread

and yes start combining 

Well, Red will start by throwing some fire around....at least see if they burn.

firebolt to target one....Attack: 22 Damage: 13

and quicken a fireball to blast them all....assuming no friends in range dc17 dex save or  32 damage.. 1/2 on success

Kekro will move up to the creatures and get as many within 10ft as possible before screaming You will not stop meeeeeee using his bonus action for a draconic cry, granting him and his allies advantage on attacks until the end of his next turn. he then tries to attack the creatures.

First he uses his Breath of the dragon to unleash a 20ft cone of ice on as many as he can get within that range. DC16 dex save or take 7 cold damage on a fail, half on a success.

Second attack against the closest creature with the spear: 25 or 15 for 11

Alend's owl familiar Shiv flies (60' fly speed) in the face of one of the aberrations, taking the help action to confer advantage on Alend's attack, then flies back around the corner using owl's Flyby capability to avoid any opportunity attack.

Alend moves forward with his 35' movement and strikes the same aberration with Booming Blade, sheathing the target in booming energy (2d8 extra thunder damage, and 3d8 more if the target voluntarily moves before Alend's next turn.  Attacking at advantage due to Shiv's help and keeping the best of 3 d20s (not 2) due to his Elven Accuracy feat.  6d6 Sneak attack damage applies due to advantage.

 Attack: 15 Damage: 51 

Alend then disengages as a bonus action (Rogue Cunning Action) and steps back as far as he can (35' movement total).

Quote from Tybard >>

Alend's owl familiar Shiv flies (60' fly speed) in the face of one of the aberrations, taking the help action to confer advantage on Alend's attack, then flies back around the corner using owl's Flyby capability to avoid any opportunity attack.

Alend moves forward with his 35' movement and strikes the same aberration with Booming Blade, sheathing the target in booming energy (2d8 extra thunder damage, and 3d8 more if the target voluntarily moves before Alend's next turn.  Attacking at advantage due to Shiv's help and keeping the best of 3 d20s (not 2) due to his Elven Accuracy feat.  6d6 Sneak attack damage applies due to advantage.

 Attack: 22 Damage: 38 

Alend then disengages as a bonus action (Rogue Cunning Action) and steps back as far as he can (35' movement total).

 

Forum roller is not showing me the details of the dice rolls, so assuming the 22 hits, let's say the 38 damage breaks down to:
- 9 thunder (NOT lightning) average damage from the 2d8 for Booming Blade
- 29 magical piercing damage from the Rapier, +2 and Sneak Attack.

And if the target moves before Alend's next turn, it will take 3d8 additional thunder damage from Booming Blade.

(Just letting you know that I’m still here. I will post my action as soon as I can.)

Ok sorry for late responding 

enemy’s rolled 2 on initiative 

“first was red Fred his flames caused one wisp to disappear though the others are hit they seem less effected then they should  kekro again releases a furry of ice neither effected much though you hear them both laugh and chuckle in the kobold tongue as Kekro lands a spear to the other quickly silence if him alend swings with his blade it booms with thunderous energy causing the creature to vanish next was his rapier who swiftly did away with the final wisp”

this was not expected

"Oh I guess I was too late to post... I didn't think about how much of a pain it would be to not have my character sheet on me at all times lol. I guess Cage doesn't get to use his cannon..."

"Ah come on! You could have saved some for me!" Cage exclaims as he puts the cannon back on his back. He is clearly disappointed that he did not get to blast something. Once the cannon is secured to his back, he starts walking down the corridor.

Alend claps Cage on the back with a wry smile.  "Give the dragon a little extra blast when we find them and we'll call it even."

He quickly investigates the room (any secret exits?) before taking the lead once more, moving stealthily and looking around him.  Due to Rogues' Reliable Talent, the minimum roll on a d20 is always 10 for proficient skills (which all of these are) so always take higher of minimum and roll listed below:

Investigation of room for any clues or secret doors:  use higher of 19 and 12 
Stealth for taking lead down the next corridor:  use higher of 23 and 21 
Perception of any further enemies or hazards down corridor:  use higher of 23 and 23 

As our hero’s  begin to to walk down the hall at the end of the room alend will see

We’re the others perceptive enough 

Perception:19

"Oh I won't hold back on that fella."

perception 18

Alend growls in a low voice, barely audible, "you all seeing what I see?  Huge eyes, floating, lightning all through them..."

 all heroes notice them do they approach ad they rush at them in a horrible mix of sylvan and draconic it states

 As it gets closer they could see a massive electric eel seemingly floating threw the air

rill initiative 

Initiative for Kekro: 12

4 initiatve for Red Fred

Alend Initiative:  18 

Alend knows draconic is thinking most kobolds know draconic, and maybe Red Fred does too, but in case someone didn't understand, he mutters:  "Damn dragon servant this one.  Set to kill anyone that isn't his boss, the dragon, who he wants to keep happy."  He spits on the ground in disgust.

(OOC:  @Ryan_Elocin - I think we still need Initiative for Cage.)