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(Dm Krull speaks goblin so he ll be able to translate to Wolfe)

 Everything is in common but the words muttered roughly translate to

Yeemik grins at you and gestures towards Sildar.  "You so sure?"  He shrugs.  "Klarg in west side of cave, across bridge.  Bring me his head, you get this human and not die.  Seem easy to me, but me just dumb goblin."  He looks at his comrades and snickers and says something else in goblin. 
Krull

 You notice further off to the north where the stairs are, maybe a couple more hunched figures.  The protruding ears give them away as goblins.

Krull whispers to Wolfe 'we need a shower after we deal with this'

"Lower your weapons Yeemik, you got yourself a deal, play nice now and you'll soon be a chief, but that human better be alive when we come back." Wolfe says calmly and motions for the others to follow him over to whatever exit would take them to the bridge.

Rabbit points towards the steps to the north. "Pretty sure that way."  As they leave she stays near the back, after Wolfe again, and keeps an eye out behind. (Perception: 14)

Edryd has been rather quiet this whole time but before walking away he will address the leader, "If we are to fight your battles then tell us about the enemy we face. Does he have others that will come to his aid." He looks to the goblin with a bit of disgusts in his eyes, clearly he is not happy to be dealing with creatures like this.

Yeemik says something to his guards, who lower their weapons and close ranks around him. Yeemik scrunches his face at your odor.  “Maybe you stop at pool and take bath first, huh?  Klarg have few goblin people and his dog. Klarg strong. Klarg also have treasure!  Want to take warriors with you?”  

You leave this cave via the steps.  Coming down them you see a large cavern with a waterfall on the east side. Below it are two separate pools - one is empty and one is still full. You see a maul on the ground near the pool furthest from you and you understand where the water flood came from. Three goblins are in this room. 
On the west side of this chamber is the bridge that Mau and Rabbit saw before, the goblin body still lying there. A javelin rests near it. The other continues over the other side. 
On the other side, the path beers left. You would guess this path meets up further with the rubble-strewn dark passageway you saw earlier, across from the wolf den. 

"Yes, we will take your warriors to make it a decisive victory for you Yeemik." Wolfe responds confidently. "Tell them to show the way and we will take Klarg and his sycophants by surprise. If your warriors take down Klargs goblin's and his dog we will deal with Klarg for you Yeemik."

Yeemik barks something in goblin and two of his warriors step up. Two of the ones from the waterfall room. 
Krull,

"Let's go, no time to waste lest Klarg will surely smell something is up." Wolfe says and ushers the two goblins in front of them to show them the way.
Stealth: 6 Perception: 9

As they get out of ear shot of the leader Edryd gets next to Wolfe and in a hushed voice says, "I do not like this Wolfe. Making deals with the evils in the darkness. They will not stay true to their word. Once the human is out of danger we should put these creatures down."

Wolfe simply nods at Edryds words.

Krull whispers at Wolfe "i won't  attack them if they give me no reason..let's say hurting my employer..anyway they are coming two of them with us"

“I share your concerns Edryd, but for the time being we should use them to our advantage.”  Mau says quietly to the others.

As you get across the bridge, the goblins stop and gesture for you to come near.  They don't talk, and in fact, cannot talk as their tongues have been removed.  But they shoot Wolfe some disapproving glares as your feet kick some rocks and scuff on the floor.
They scratch out a small map on the floor of the path you're on, in the dirt.  In the map below, you are currently crowded around the yellow "x."   The path moving forward is rather narrow (5-6 feet) and you could move two abreast if you squeeze but it would also mean having to spread out if unpleasantries occur...

MAP

If you look around the corner, you'll see pretty far into the corridor and the room beyond.  It looks like the main sleeping area for the goblins.  One goblin is on guard duty at the entrance to the area, and it is clearly on alert, looking into the dimness, bow raised (seems like it might have heard some noise).  Behind that one you see at least one more goblin keeping an eye on the first.  Behind that goblin and a bit elevated is a large hulking creature, similar in some ways to the goblins but larger and hairier.  

And let me know about what you want to do (could plan on OOC thread) and marching order. 

After peeking forward to assess the situation Wolfe again turns to the two mute goblins sent with them. "Could you convince your brethren to not alert Klarg to us coming, I suppose you have some way of signing them since talking seems off the table. If they could just stand aside and not oppose us this will be much quicker and your tribe will keep it's strength." Wolfe suggests to the mute goblins. Persuasion if needed: 10 rolled with advantage if help is given, otherwise go with first role.

The two goblins look at each other, then at you all.  One starts moving its hands in strange movements and you step back, weapons raised in alarm before Mau stops you.
Mau, you recognize what they are doing as Thieves' Cant, the gesture-based language of thieves.
Although a bit broken, it says,

"They don't hold the same allegiance it seems, the goblins under Klarg will likely not provide any assistance here."  Mau looks down the darkened path in front of him then back to the others "If we could draw the second goblin forward, I could sneak up the side tunnel and take one out while one of our magic users takes out the other, or similarly if someone has skill with a bow."

"Yes I guess that is a no then." Wolfe mutters and turns to the others still whispering. "I don't think there is much surprise to be had but there are just two goblins, a really big furry goblin that most likely is this Klarg, and his pet in there. If Edryd moves in with his shield (possibly using dodge actions.) the rest of us follow behind it, targeting down whatever shows itself until we reach this Klarg. If we take him and his pet down his goblins should likely surrender. Any questions?" Wolfe finishes looking around at the others in the tunnel.

"I'm not against some trickery Mau, I'm just not sure we need any, considering there are seven of us and only four of them. But by all means, snipe away." Wolfe says with a confident smile.