Jorzu 

Jorzu finds solace in Fergus' words. All he need do is open a door. "Open a door. I can achieve that. Door." He looks at Laiti, "Here goes huh? You come with me and let's see if we can manage some mischief" he continues to instruct Laiti to turn invisible and then follow him towards the door once the goblin has past their current position. He whips his hands around and gradually fades from sight. He waits for the goblin.

Stealth 16

Laiti Stealth 26

((Didn't add advantage. Let me know if it applies due to Invisibility))

Jurgen Stealth 14

Seeing everyone being very stealthy and knowing his armor makes noise, he carefully follows the group. 

Quinn’s stealth check: 18

Quinn gathers up his cloak and wraps it around himself to conceal all his gear. He crouches down low with his back up against a large boulder. He’ll do his best to keep his else peeling for any movement approaching from the tree line. 

(Group Stealth rolls: 10, 19, 19, 16, 26, 14, 18... Pass.)

You hide. Darkness comes to the mountainside. Those of you without darkvision see next to nothing.

But not after the last light vanishes, some of you hear the quiet footsteps of a barefoot goblin making its way through the ashen sand and scrabble. It's the goblin you freed yesterday.
It advances unhesitatingly to the double doors and bangs on them.

In Goblin:

 The massive doors open. You see a dim, eerie blue light within, but little else - just a hint of gray stone floor. You see no goblins nor any other living figures inside.

Fergus:

Maintaining his hiding place, Fergus doesn’t move until he hears the doors open.  Once quiet Regina again, he moves to where he can see in the direction of the door, waiting and hoping for a sign from Jorzu once he has done his work.

Jorzu 

Speaking to Laiti telepathically:

He takes off as quite as he can after the Sawplee goblin. He only hopes Laiti has done the same.

When they approach the door, Jorzu attempts to use his small size to sneak through undetected.