Session 18 in Rise of the Runelords in 5e

The group learns that Shalelu's step father abandoned her after her mother was killed in the Elven community of Crying Leaf. Jakadros wept at how weak he was leaving a child and the village behind with his embarrassment of failure. He eventually joined the order of the Black Arrows to atone for his past, but it seems his past has caught up to him as well as death and destruction.

Heading back to camp, the group finds out that these are the last of the rangers of fort Rannnick as well as the fort commander is missing in the Shimmerglenns, on one of his monthly walkabouts.

Learning the party is considering taking back the fort the rangers pledge service to them to join forces and show the group a secret way into the fort, a cave behind the falls leads to a secret way into the fortress.
A few clashes with orcs and ogres around the fort has the group learn that Kreeg clan ogres and Bloody Skull tribe have allied to take the fort from the black arrows, but they have tried this in the past and failed, why now did they succeed?

Observing the fort the group learns major damage has been done to one gate, as the second is to well protected to assault the fort head on. Just before entering the secret tunnels, they witness a blue wyvern land on the top most turret, Charles does not say anything but knows immediately his father a orc of great power, Dank Vapour is within.

Heading through the falls into a secret cave and armoury, they encounter a few shocker lizards (giant lightning eels, yawning portal pg.236, just made them meduim size and gave them a walking speed).
The cave kept going but they used the secret armoury door to sneak into the court yard and spike a door shut of the barracks containing 12 ogres, it was raised off the ground so they covered all the chopped wood under it with oil and set it ablaze, escaping back to the secret door to watch the beasts roast alive, the smell and sound was abysmal.
Continuing on a old crypt of buried black arrows did not rest easy as several specters assaulted the group, Tamar casually turned or took them down with the power of Desna.
Using the same conjure animal spell as before, giant eagles assault the walls as the group leaves the hidden caves to sneak into the main keep.
An erie silence greats them, as garbage litters the floor within fort rannick. Charles quickly gets the rangers to show him the way up to the next floor and with stealth they by pass all to the stairs leading up and surprise the occupants of the commander's quarters.
I changed all the Kreeg ogres to bloody skull orcs in the fort but kept all the ogres in the courtyard, it seems they had a disagreement and one would not bother the other if sounds were made.
Dorell Kreeg was changed to enchanter from volo's guide pg.213 just added orc racial traits and Hookmaw Kreeg was replaced with ogre (made medium size) beserker from nord's ultimate bestiary pg.120.
The fight was all one sided as Tammar dropped a silence spell into the room, effectively eliminating Dorellas spell arsenal from the engagement. Hookmaw was a larger threat but finally when down, but before that Dank and his right hand man, er orc (Jaagrath, just used the name) opened the chapel door and entered the hallway while throwing out Dank vapes from the vape machine, yeah I know it's dumb but it's player background!

Toucan attacks Dorella as the Druid wildshapes into a Rino to charge Hookman

Charles, Toucan and the rangers Vale & Kaven enter the fight in the Commanders quarters, the D4 represents the spot where silence has been cast, the two ogre bodyguards hear the fighting as Dank and Jaargrath call for help

Later Ulfgar the druid wildshapes into a giant crap as Dank is dealing far too much damage.

Finally Dank is slain and Charles chops his fathers own head off, as orcs start running up the stairs they back away as infighting and looting begins among remaining orcs and ogres.

Climbing outside on the ramparts, Charles holds Danks head high, the orcs flee in panic as Doomsmasha flees on windstalker, Danks wyvern.
Doomsmasha is one of the sons of Dank Vapour.

Lucrecia watches from the distance as the ogres walk away to hook mountain and the orcs flee into the woods, Doomsmasha lands Windstalker close by,
"It seems the sons of Dank, will fight for leadership of the tribe" Lucrecia stated
Dismounting and walking towards her Doomsmasha says "the orcs are useful but not needed, what do we do now?"
"the dam gates are open almost fully opened, the Magga is near the village, we will ambush your brother and his friends there" said Lucrecia.
"Charles will die by my own hand" stated Doomsmasha
"come, we need to set the stage" said Lucrecia as they walked towards Turtleback Ferry.