Dimensional Collapse

Ambush

A portal opens up in the Labyrinths. Scorch, Amber, Mira, Eddie, Chell, and their new acquaintance passed through, they looked at their new surroundings, but the stranger kept walking towards the way out. They reached a door with a switch next to it.

???: "Puzzles, something that we'll be expecting in every damn room of this place."

Eddie: "Child's play." He walks towards the switch and pulls it, opening the door. "These juvenile puzzles are bit too simplistic, I can probably solve them while sleeping."

Everyone looks at him with a poker face, resenting on his commentary.

Eddie: "What?"

Amber: "Keep your mouth shut. Otherwise you'll be testing all of these puzzles."

Eddie: "It's not testing its solving."

Amber: "Do I care?"

Everyone continues walking down the path, solving two or more puzzles (I've never played undertale -3-) before reaching a room with spikes.

Eddie: .....
"Chell, you first."

Chell: "Wait, what?"

???: "It's just to see something. Just go."

Chell: "Why doesn't Scorch go? ;3;"

Scorch: "Because you're a living gelatin, NOW MOVE!"

Chell: "(it would've been funnier if you went first -_-)"

It walked closer to one of the spikes and stepped on one, to its surprise, the spikes hid in the panel.

???: "Just as I thought. That would be all Chell."

The stranger walk to where it was and continued walking in a zigzag pattern. Once everyone made it across, they heard something running away deeper into the labyrinths.

Scorch: "Is anyone else stuck here?"

???: "That must be the caretaker of these ruins, we'll soon find her home, thus we will find the exit.

Amber: "Good to know."

Mira: "How did you figure out the rest of the path."

???: "These worlds are different but the same, they share similarities. The puzzles are a good example of it being the same as the rest of the universes, a Multiverse if you will, one gets replaced with another to fill up the empty slot. "
They continued to walk forward, but Mira stood there thinking for a while. She came back to reality (which was being held by a thin thread at this point) and continued with the rest.

/Meanwhile/

Marven walked around the forest, enjoying the view, she went deeper to then find the large doors that separate the Labyrinth and Snowhill.
She walked closer to the large doors, and knocked to see if someone answered.

A minute past but no one answered, she turned around and felt like something was watching her. To her surprise, something jumped out of the forest, and attacked her with a twin blades. Marven quickly evaded the attack and attempted to disarm the attacker. She took one blade, but the attacker was able to scratch her with the other one. There was a cut around her side and left shoulder. She fought back, and was able to actually hurt the attacker. She tripped with a root in the ground, and the attacker took advantage of that and was ready to kill her there and now. In an instinct, Marven grabbed a bit of snow off the ground and tossed it at the attacker. She made a run for it with the attacker not long after, following her. She cuts through the forest, but the attacker still caught up. She hid behind a few trees, planning her next move. She peeked out, but it was gone. Marven was grabbed by the neck, and there she got a better look at Her.