Amshoon leads the way after realizing no one else is going to

Irena keeps a weather eye out for trouble.

Perception: 15

Elizabeth whispers “I’ll stay with the horses- we’ll be here when you get back.” 

I’m guessing Amshoon and Irena are at the front- where does everyone want to be in the marching order?

Vinras will see those two upfront and decide to protect the rear of the party.

So I'm guessing Nicola and Debolsia will be somewhere in the centre. 

You begin travelling down the trail, following the drag marks. It's clear this has been used to stage ambushes for some time. You travel down the trail for nearly a mile, before Irena silently holds up a hand. Almost hidden by the underbrush, a braided cord snakes up into the trees. Its a snare, ready to catch unwary travellers. 

Debolsia maintains vigilance at the center of the line making sure threats do not surprise the group from the sides. When Irena raises her hand and points out the trap, Debolsia takes an interest in how it was made and how it functioned. Doing her best to remain quiet, she asks the others, "Any idea how to disarm it?"

Amshoon looks at Debolsia curiosly.  "I think it'd be simpler to just go around it.  We mess it up trying to disarm it, and it'll make a lot of noise."

Debolsia nods at the suggestion. "That's a good point."

It’s easy enough to pass the trap. Amshoon or Irena, make me another perception check! 

Amshoon perception 10

Perception: 19

You continue down the track, winding up into the foothills of the sword mountains. A chilly rain begins to mist down, slowly soaking the forest as the sun begins to sink low. As Amshoon takes a step, his foot breaks through the layer of pine branches and leaves covering a pit trap. The sudden motion pitches him forward suddenly- give me a dexterity saving throw!

As this is happening, Irena hears several voices speaking a harsh gutteral language. They are approaching around the bend of the trail, and you have maybe a few seconds before they spot you. What will everyone do?

Amshoon Dex save 14

If I save, can I thorn whip out of danger?

Irena readied her longbow and called to the others "Ambush! Everyone get ready!"

Seeing the trap, Debolsia does what she can to attempt to keep Amshoon safe. If she's alerted to the approaching threat, she'll try to take cover and hide. 

Cool. As Amshoon begins to tumble forwards, he reaches out with his hand. A long vine covered in sharp thorns lashes out and wraps around the trunk of a tree. It snaps taut, hurling him unharmed into the brush creeping in on the side of the track.

You all have just enough time to try to hide, so make a stealth check if you wish to. 

Amshoon

stealth 6

stealth: 14

Amshoon landed on top of Debolsia. This is now canon.