The hunters slowly lower their bows, still a bit wary, but no longer aggressive. "We'll finish this, then leave. Cultists are in the cave. No trouble here." They go back to work on the deer, keeping an eye on you.

To the hunters: "The elk said he isn't too keen on watching you skin his kin in front of him, but since it's already dead just make sure you use it all and leave nothing to waste." 

(I don't speak elk and I didn't read your spoiler so I have no clue if I'm right or not.) 

Lyria tries to cut through the fog of her headache to discern if it really appears like they are hunters and not hiding anything.  Investigation 1

Hordkhen watches the hunters a moment longer, trying to size up their intentions alongside Lyrics...

Intuit 15

Lyria: Your headache is too strong for you to focus.

Hordkhen: They seem like they just want to carve meat. They are a little wary of your group's aggression and take turns keeping an eye on you.

To Delirious "Well said, elf."

Kamag relaxes his stance, but continues glaring at the hunters.  

To the party "I think we should look into the cave, but I am not comfortable with these poachers at our backs."

I'm not acquainted with the legalities of hunting in this region, but I just want to find my friend and I feel we are no closer.  Let's move forward.

Nod head start to walk around the hunters

Stealth + 10 pass without a trace 27 

Perception heading up to the cultists to get the jump on 16 

Stealth.  15  

Perception.  13

To Lyria "I don't like the way they smell or look.  Poachers."  Kamag hefts his axe onto his shoulder, spitting in the general direction of the hunters.

Stealth 17

Perception8

Stealth 30 perception 10

Stealth: 6

Perception: 15

Hordkhen starts sniffing the air for other presences in the cave.

Perception 21

Stealth 3

Those rolls are good enough to not botch it!

As you quietly and carefully approach the cave mouth, you don't notice another living soul in the camp. Trashed gear and empty tents abound. Once you crest the top of the hill to peer into the cave mouth, you notice a solitary guard about 30' in past the mouth of the cave. They are dressed in robes that denote a higher rank than entry-level cultists were wearing. They don't seem to notice you.

You are still unnoticed, the crest of the hill you're peering over is about 200' from the cave mouth. To the North is the giant tent where the high-ranking cultists were. (You're at about the second "E" in Level 2 on the map below. What's your next move?

(whispering...as best a half-orc can)"Not sure how you guys make tactical decisions, but we could capture this guard, get some information out of him.  Or carve him up like an elk, whatever you guys decide."

Walk off center to keep the same stealth to the wall then travel along the wall to the mouth of the cave wait until everyone is stacked up then charge attack unless someone proposes something 

Kod hears 'charge attack' and instantly agrees

Delirious moves in closet enough to be in effective bow range, crouching down to not draw attention hold an attack for when the guard spots us. 

Initiative 19 

Charge attack as an elk ram 20 with 8 dmg if successful an extra 7 and DC 13 str or be knocked prone

On the very off chance I do enough dmg and if I dont see a 2nd person Nonlethal dmg

Hodkhen: 19
Lyria: 18
Kamag: 12
Kod: 22
Delirious: 15

Dragonclaw: 12

19 Hordkhen
16 Kod
14 Dragonclaw (Surprised)
13 Kamag
11 Delirious
 9 Lyria
 6 Place'

Everyone is up! Place's action will happen on his turn. The Dragonclaw guard is surprised and won't get an action in the first round. He's 30' deep in the cave, we'll say you can all reach him if you want to get a melee hit in.