(Assuming Elyria is using Disengage.) 

Eladrin 1 who had approached Elyria (closest one to Aurelius), no longer has a target to grab with her 35 ft. in the air.  He sheathes his sword, and grabs his longbow, looking to her leader for direction. 

Eladrin 2 struggles to try to free himself from the rope that he is entagled in. (Athletics Check: 19)

The Eladrin Leader looks a bit surprised by the sudden appearance of the other group members. "The enemy has laid a trap! This shall not stand," he says, sounding a bit worried but not willing to give up yet. He grabs a longbow, nockng an arrow and fires at Elyia. 
(Longbow Attack: 23 Damage: 7)

With the Eladrin Leader's attack, Aurelius releases his [Tooltip Not Found] at him. It just barely misses him as it sails past. 

Eladrin 2 remains restrained. 

Round 2

(Aurelius is now up!)

Round 2

Aurelius will draw his longsword and ignite it (BA). He grimly charges at the leader, saying, "Foolish, prideful elf."

First flaming longsword Attack: 24 Damage: 8 magical slashing + 10 fire damage + divine smite 12 radiant damage.

Second flaming longsword Attack: 8 Damage: 6 magical slashing + 11 fire damage + divine smite 11 radiant damage.

(Note - Rahkeshi cast the Spike Growth spell, which causes a 20 ft area to be difficult terrain and you take 2d4 damage per 5 ft moved. I would say it's 5 ft through the spikes to get to Eladrin 1, 10 ft to Eladrin Leader. Aurelius cannot get to melee range of the leader but I would say he could reach Eladrin 1. Since you saw her cast the spell, I'd allow that you know it's there - avoid ot ignore as you wish)

(hm.  good point.  Alright, I'll change that to an Eldritch blast).

First Beam Attack: 22 Damage: 2 force damage

Second Beam Attack: 24 Damage: 4 force damage

Round 2

Both of Aurelius' beams of energy strike the Eladrin Leader. 

Rahkeshi runs hard towards the Eladrin as she uses Eldritch Blast to send two crackling beams of energy towards the Eladrin Leader. 
(Spell Attack: 21 Damage: 2)
(Spell Attack: 22 Damage: 3)

"You will pay for harming her! No mercy!" she yells. 

(Flynt is up) 

Round 2

Rahkeshi hits the Eladrin Leader with both of the beams. 

Flynt hopes that taking out the leader will give the other two pause. Raising Betsy he sends some bolts headed the leaders way.

Attack: 27 Damage: 7

Attack: 15 Damage: 7

If either attack hits a STR DC: 12 or be restrained for 1minute. Target takes 6 fire damage. And 2d6 at the start of each turn.

Elyria winces as the Eladrin arrow pierces the armour of chest, although more troubled by the bloodshed than her own wound. She swiftly takes one of her last arrows from her quiver, draws, aims and loosens it in of swift graceful motion, sending it towards the leader Eladrin, hoping to convince them they are outmatched before any loss of life.

Elven Longbow: 17 Piercing: 6 (non-lethal if possible)

Her winged boots then carries her back behind the closest tree for cover.

Bonus action Stealth: 22

(OOC - You can knock out an opponent with a melee attack. There is not an option for that with a ranged attack.) 

Round 2

One of Flynt's attacks hits, (I am presume he used Fiery Shackles) and he causes fiery shackles to appear on the Eladrin Leader. 
(STR Save DC 12: 3)

Elyria's arrow strikes the Eladrin Leader as well. He is obviously wounded, but still seems in decent shape. 

Eladrin 1 blinks out of sight a moment and then appears 30 ft away, just behind the tree that Elyria tried to hide behind. He fires rapid shots from his longbow at her. 
(Longbow Attack: 18 Damage: 11)
(Longbow Attack: 13 Damage: 11)
(Longbow Attack: 8 Damage: 8)

Eladrin 2 attempt to free himself from the rope he is entangled in. 
(Atheltics Check: 15)

The Eladrin Leader calls out to the others. "That's got to be the half-orc. Retreat back and report in!"  Having taken numerous attacks, he stows his bow and moves for the tree Elyria is using for cover. (15 ft - 17 damage from the thorns) He then swiftly climbs up the tree another 15 ft. (Foliage gives him three-quarters cover.) 

Round 3

(Aurelius is up)

Eladrin 2 is able to escape from the rope entangling her.  She also blinks out of sight for just a moment and reappears 30 ft closer to Flynt. (Say 30 ft distance now.) 

(Seems like it would be difficult to climb a tree with fiery shackles around your wrists...)

If the path to the tree is not thorny, Aurelius will chase after the leader.  (I don't know what the rules are for combat while climbing... can I use a one-handed weapon? can I grapple?)

If the path to the Leader would necessitate crossing the thorns, then Aurelius will instead go for Eladrin 2, two melee attacks with his longsword.

(First flaming longsword Attack: 17 Damage: 9 magical slashing + 5 fire damage + divine smite 8 radiant damage.

Second flaming longsword Attack: 20 Damage: 10 magical slashing + 9 fire damage + divine smite 9 radiant damage.)

(OOC - It is not going to be possible to climb with the flaming shackles. Nor move at all.  In my head I was thinking that the Save was made, but clearly it was not. So correction to the Eladrin Leader move for Round 2)

The Eladrin Leader takes 7 damage from the firely shackles.  It then aims its longbow at Rahkeshi.  "That's got to be the half-orc. Retreat back and report in!" 
(Longbow Attack: 10 Damage: 12)

(STR Save DC 12: 12)

Corrected for Round 2

The Eladrin Leader manages to break free of the fiery shackles. 

(OOC - And... Eladrin 2 is not going to be within 30 ft of Aurelius. It used Fey Step to move towards Flynt. And you and Flynt were on opposite sides of the group of Eladrin.  It is closer to 60 ft from Aurerlius.  I guess this is why I should just do a simple map!  Sorry about that.)  

(yeah, sorry, it would be helpful, even a simple diagram. Thanks.  Also... How do you operate a longbow with shackles on, LOL?   So, is the leader within 30 feet?  If so just use the attack rolls above for him.  If not.... Maybe Aurelius will whistle for Lady and mount up.  If I remember right, Lady was travelling with us, no?  I'm too lazy to scroll back...)

(OOC - The rules for restrained: speed becomes 0, can't benefit from any bonus to speed, attack rolls against have advantage, attack rolls made by have disadvantage, has disadvantage on DEX Saves.  It is an odd thing with "shackles" being how the feature is described but the mechanics clearly state "restrained".) 

(I don't recall specifically - and didn't looks back either - mentioning Lady, but I'm fine with assuming she was brought along.  Though you probably did not bring her up the cliff.  I presume she was left to hide in the forest, and you can communicate telepathically when withing 1 mile, so it would be easy for you to have located each other.) 

(OK, so you are ruling that it is reasonable that Lady is with us? If so, Aurelius will spend half his movement to mount, charge at the leader (avoiding thorns), and use the attack rolls above to attack from horseback.  If this also is not possible with the layout, then we'll just move as close as we can.)

(Here's the post where he resummoned the warhorse)

 Map - Number (1,2) are Eladrin. L is Eladrin Leader. Other letters are characters (A, E, F, R). The 'T' are trees which might be used for cover.  The green area is the thorns.

(Aurelius - You would go through the thorns since the Eladrin Leader couldn't move due to the shackles. Hope the map helps)

(It does help, thank you.)
Aurelius will, astride his warhorse, charge at Eladrin 1.  Attack rolls above, unless you want me to reroll.