(Rolling Caryarus' Advantage)

10 or 11, whichever is higher.

 With the concerted effort between the two of you, you manage to push against the door hard enough to move back the two javelins that were forced between the door and the floor.  With an ear-scraping screeching noise the door laboriously swings open to reveal a large room with your orc quarry.  It seems he has gone and found the two true members of muscle in his hunting party, a pair of half-ogres.  They are engaged in low conversation before the door scrapping open draws their attention.

One of the half-ogre's step forward and speaks in broken common.

"What do why attack. Little brother and little brother share food from you.  You kill little brother and little brother cry to big brother and big brother.  Now big brother have you make pay."

His voice is a menacing rumble of boulders falling down a mountain side.  Fortunately at a quick glance you don't think either of them can fit through the door very easily without squeezing through.

(While in a doorway, archway, or hall that is only 5' wide large creatures must squeeze to get through.  While in this space any attacks made against them have advantage and any attacks they make have disadvantage.)

(You guys have an opportunity to talk if you want to, but even without an insight check you can tell they are starting off hostile to you.  Talking might avoid combat...or combat might be unavoidable at this point, you would have to try to find out.  You can also roll me initiative when you are ready).

Orc: 10

Half-Ogre (Black Frame): 14

Half-Ogre (Yellow Frame): 10

Average: 10.333r (10)

Not Mist (though, she might not believe it, so, better do not ask).

In case we are dome talking (elves still can try - who said ogres are resistant to elf's charm :) ) Initiative for Misttyn: 12

Ravanala gets ready for combat... 5

(I don't think we should be metagaming this at all since it's a time-limited decision. Sometimes, it's fine for us to decide between us what we're gonna do based on who's the best at something, but our characters right now don't have the time to decide who's gonna talk and who isn't. Now, if the DM allows it, here's my opinion:)

Anyways, here's Maghana's Initiative: 13

Mist impatiently shifted from one foot to another keeping safe distance from the door frame: "Why are we even talking to these stupid uglies? Can I shoot them already?"

Wing hears the far door scraping and the ogre voices from the inside. He steps back from the corridor and tries to position himself on the western wall of the room, in front of the just opened door, to get a better look inside.

Initiative: 9

Okay, we are in initative order.  Caryarus, you appropriately have first action in this nonsense...Initiative is as follows:

Caryarus

Half-Ogres & Orc

Wing & Mist concurrently

Maghana

Ravanala

The orc uses his great axe to bat the javelin harmlessly to the side as he aggressively rushes forward...

Aggressive. As a bonus action, the orc can move up to its speed toward a hostile creature that it can see.

...making it all the way through the doorway and swinging his great axe down towards Caryarus' shoulder.

"Now you regret attacking brother and I!"

Attack: 22 Damage: 7

Unable to reach the door themselves the half-ogres seem to be content to slowly close the distance towards the door and allow the smaller orc do the work for the time being.

"Finally!" Mist readied her bow and excitedly shoot at the green-faces enemy! Attack: 25 Damage: 10

Wing follows the example of his companion and takes out his longbow, shooting the aggressive orc "take this, orc!". Attack: 17 Damage: 9

Seeing that an orc was right next to her, Maghana uses her handaxe trying to carve into the orc's body.

Attack: 16 Damage: 4 Slashing

Ravanala shoots at one of the half-ogres through the door, using her crossbow.

to hit:  6

Damage: 8

The orc, ravaged by Mist and Maghana, is felled by Caryarus' swing cleaving clean through his neck and seperating head from shoulders.  The body falls to the ground spurting black ichor.

The half-ogre's seeing this, bellow in a rage that is mixed with tears.  True grief can be seen on their face as one of them squeezes into the doorway to gather up the body and drag it away from the battle.

(Maghana & Caryarus, the Yellow Half-Ogre provokes attacks of opportunity from both of you as he enters and then leaves your threatened areas. This AoO has advantage due to the sqeezing of the doorframe. )

The other half-ogre seems more concerned with getting revenge than seeing to his fallen comrade though.  He squeezes into the doorway and clumsily swings his axe down towards Caryarus Maghana, his arms awkwardly pinned by the groaning doorframe.

Attack: 12 Damage: 8 

Corrections: After looking at the map again only Maghana gets the AoO and Maghana is the one attacked, neither Half Ogre can reach Caryarus with how the map is arranged.

Although the Half-Ogre was strong, Maghana was confident, and so after receiving a swing from him, she blocks it with her shield and proceeds to try to carve at him as he tries to run away.

Attack: 17 Damage: Unable to parse dice roll. Slashing

(What happened with ravanala's attack?)