Thelanis is ready.

[[ How many could Draíovht catch in a faerie fire? ]]

3 of them.

May as well.

Standing at Valar's side, Draíocht helps with initiating the combat by casting out a faerie fire and molding himself into a Dire Wolf.

Once everyone appears ready, Valar will launch the surprise attack against the closest guard (Attack: 11, damage: 11)

Hobgoblin Dex Saves:

Hobgoblin 1: 21

Hobgoblin 2: 2

Hobgoblin 3: 16

I'll roll initiative for everyone: 

Group 1: All of You

Group 2: The Hobgoblins

The Hobgoblins grab up their swords as half them are lit up by the faerie fire. Valar rushes in to attack with Draíocht close behind, but misses one of the Hobgoblins in the dark. Amiz and Thelanis are still hanging back yet could still get within 60ft if they wanted to on this turn, or get within 30ft and be able to melee next turn with the Dash action.

[[ DEX DC 13 so I think that 2nd hobgoblin made its save, hence 1/3 instead of half being lit up. ]]

If the hobgoblin next to Valar is not lit up by faerie fire, Draíocht snarls and pounces. [[ Main idea is leave the FF'd ones for others and use Pack Tactics as his source of advantage, plus giving advantage to others' melee if an attack knocks one prone. ]]

To-Hit: max(5, 20) = nat-20
Damage: 5+4+3+5+3 = 20 piercing
if it's still alive, DC 13 STR Save or be knocked prone

Thelanis approaches within 30 ft and hexes(Str) one of the non-illuminated hobgoblins and blasts it with a well-aimed shot from her Eldritch Blast. AC 25(Crit) 13 force, 1 Necrotic.

One hobgoblin goes down to Draíocht‘s bite. Thelanis is able to get within 30ft with the Dash action. So she casts hex but is too puffed from running to get Eldritch Blast off.

Amiz is still up. 5 armoured hobgoblins are engaging in combat with the others just over 60ft away.

Once the fray has started Amiz moves in but as he was staying back, he cannot quite reach one of the hobgoblins and so takes a smaller hand axe from his belt and hurls it at the nearest enemy.

Hand Axe. 

Attack: 8 Damage: 10

End of Turn. 

I can’t see your dice rolls Amiz.

Once the fray has started Amiz moves in but as he was staying back, he cannot quite reach one of the hobgoblins and so takes a smaller hand axe from his belt and hurls it at the nearest enemy.

Hand Axe. 

Attack: 23 Damage: 10

End of Turn. 

Amiz' axe buries into Hobgoblin 4's armour, bringing him to his knees, yet he get's back up and continues to assault Valar. 

Also, Valar is still to take a turn this round. There are 5 hobgoblins around you, two of them outlined in faerie fire, giving you advantage against them. One other has an axe in his back, while the other two are fresh targets.

Valar will attack the closest Hobgoblin Attack 7 (Rolled off the sheet, without advantage), damage 9 

Valar takes a swing at one of the hobgoblin's but it stumbles out of his reach as Amiz' axe hits it in the back. The hobgoblins go now, all attack either Valar or Draíocht with their longswords.:

Hobgoblin 1 Longsword against Valar Attack: 5 Damage: 5 Slashing

Hobgoblin 3 Longsword against Valar Attack: 11 Damage: 9 Slashing

Hobgoblin 4 Longsword against Draíocht Attack: 21 Damage: 6 Slashing

Hobgoblin 5 Longsword against Draíocht Attack: 9 Damage: 8 Slashing

Hobgoblin 6 Longsword against Draíocht Attack: 13 Damage: 8 Slashing

You all are up, there are 5 hobgoblin's attacking Valar and Draíocht. Two of them are lit up and you'd have advantage against them. Another has an axe in his back, while the las two are completely fresh.

Valar continues his attack: 16, damage 10

Quick con save to see if Faerie Fire is still up

20 vs DC 10

Going off memory on some stats for a quick-post.

[[That was a typo, I meant 60ft.  My intent was to close 30ft. per round while blasting. ]]

Thelanis aims a blast at the target she hexed.

[[EB Attack: 7 Damage: 6 Hex: 6]]