The Valley of Ends

 Continuing down Tunnel labelled 6 without a clue to this strange location. With Onyx and Resfean in the front and Gotch and Salys in the back, the party enters the darkness as normal and after some distance, they emerge from the tunnels to find themselves stumbling down a steep slope, keeping their feet under them but the party sees a mass of web at the bottom of the slope.

Dex Save to avoid getting struck in the Webs. DC 12. If you fail, you are restrained.  Creatures restrained by the webs can use its action to make a Strength check DC 12. If it succeeds, it is no longer restrained. If you start your turn on the web traps, it's another Dex save or get restrained once more.  

From the web trap, looks up to find a large cavern, the walls are covered in webs (this is just difficult terrian) but not as dense as the bottom of the slope but more concerning are 6 Giant Spiders emerged from cocoons of webs on the walls.

Roll Initiative after Dex Save

Giant Spider - 19

Onyx - 14 - Not restrained
Salys - 14 - Restrained
Resfaen - 12 - Restrained

Dex save 18

Innitiativ : 14

Salys dex save: 8, initiative: 9
Bearskr dex save: 19

(Is it possible for us to get off the webs completely and burn them? And as he's riding Bearskr still, would Salys be stuck in the web or just Bearskr?)

Both of you are stuck in the webs. You can get move away from the web trap, the rest of the room is covered by webs layer, not enough to trap a person but its making movement difficult. Burning the web is possible through if you burn it while restrained, you're burned as well. 

All the giant spiders can easily make it to the party in one movement.

Resfaen Dex Save: 13

Initiative: 19

Gotch dex save: 15

Gotch initiative: 19

(Just to deal tiebreaker

Turn order
Gotch - 19 - not restrained by webs
Giant Spider - 19
Onyx - 14 - Not restrained
Salys - 14 - Restrained (Bearskr as well)
Resfaen - 12 - Restrained

So does this mean that Gotch is not in the webs, or is he in them, just not restrained? Also, what is there for non-web places he can move to, if he is inside the web area?

Room is covered in webs of varying amounts. The end of of the entrance slope is a webbing trap, where the webbing is most dense which Gotch and Onyx managed to avoid, jumping off the side during the slide down. Rest of the room is covered in thinner layers of webbing, enough to act like a very sticky floor making it hard to move (difficult terrain) but won't restrained PCs like the trap area.

Gotch casts a spell...

summon fey

He then uses his bonus action to hide: 25 (assuming no light sources close to him. If some are, then he would move to an area of dim light before hiding.

The fey spirit, with the mirthful mood, appears near one of the spiders and strikes at it with its short sword...
Attack: 9 Damage: 12 plus force damage: Damage: 3

it then uses its bonus action to teleport away from the spiders, but remaining within 10 feet of only one of them. That spider must then do a DC 14 Wis save or be charmbed by Gotch and the Fey Spirit.

(Fianceal Check: Did you buy the Glided Flower for this spell, it's not conumsed but money is money)

Gotch summons a Fey Spirit next to a giant spider (#1) and commanding it to strike. The small Fey Spirit draws it's sword and stab it into the giant spider before teleporting a short distance away and uses Mirthful to try and charm the spider.

Wis Save: 3

The Spider charmed by Gotch and the Fey ignores the two as it moves towards the party with the rest of the horde through two other spides come for the Fey Spirit and Gotch in his hiding spot. (Web Sense and entire room is a web)

To save some space, if a bite hits, roll DC 11 Con save. Taking half the poison damage on success. full on a fail.

Spider #1 bites at Onyx
Attack: 16 Damage: 4 piecing
Poison: 9

Spider #2 bite Gotch
Attack: 14 Damage: 10 piecing 
Poison: 7

Spider #3 bite on Fey Spirit
Attack: 23 Damage: 11 piecing 
Poison: 11

Spider #4 bite on Salys
Attack: 18 Damage: 9
Poison: 15

Spider #5 bite on Bearskr
Attack: 17 Damage: 7
Poison: 5

Spider #6 bite on Resfaen
Attack: 17 Damage: 10
Poison: 6

Next Up:

Onyx - Arrows
Salys & Bearskr- both Restrained - Free self and moves away
Resfaen - 12 - Restrained - frees self and Move away

Start of Round 2
Gotch - ?
Fey Spirit - ?

DC 12 Strength check to pulls yourself out of the Web. Web can also be attacked to break it. 

(I think he tried to charm a different spider then the one he attacked.)

Not sure how many spiders are around me, but i will assume a lot. Onyx (BA) casts Zephyr Strike to move somewhere deeper into the room, away from the spiders (useing Feline Agility if necessary, i have 40 mvs, so i can mv 20ft, or 40 with Feline) and he will shoot 3 fire arrows at the spiders

• 1st Attack vs Spider #2: 25 Damage: 17
• Dread Ambush+Zephyr Attack vs Spider #3: 24 Damage: 30
• 2nd Attack + Favoured Foe Mark vs Spider #2 Attack: 24 Damage: 20

Favoured Foe:

Resfaen will attempt to break free from the webs and then will use her bonus action to have the axe's light brighten to its full extent illuminating the room and maybe blinding the spider in front of her.

STR Check: 14

Spider #2 and Spider #3 drop to the ground dead from the flaming arrows. Thir souls sucked into the lantern.

Salys attempts to attack the webs holding him and Bearskr, urging his construct to disengage and move away off the worst of the webs if they free themselves, or dodge and prepare to deflect the next attack against Salys.

(Salys's web) Attack: 24 Damage: 8
(Bearsrkr's web, rolled at disadvantage, but if the first attack hits, it shouldn't be.) Attack: 17 Damage: 8 (Nevermind, first roll was the lower anyway.)

Salys and Bearskr managed to hack and bite away the webs from them (I assume they move away from the trap then)

Quote from Shodai_Kishi >>

Salys and Bearskr managed to hack and bite away the webs from them (I assume they move away from the trap then)

 Yes, with their backs to a wall if possible.

Notes, due to webbed floors (difficult terrain) and surrounding large spider(10ft wide and 10ft reach), Salys and Bearskr will still be within striking distance of spiders. Will keep Bearskr's reaction ready through.

Back to walls against spider climbing enemies are not as safe as one will think. A wall is a floor to them really.

(Gotchs turn)

The Fey spirit attacks the closest spider... (not hte one it has charmed...)

To hit: 11  Damage: 12  and 3 force.

Gotch sens a crossbow at another of the spiders...

To hit: 24  Damage: 8  He then hides:  23

...