Complex sentence: Sunny bites a hole in the net, and using the rope they climb down from the net and travel along the hallway at the bottom of the shaft, with Violet's ersatz welding torches, only to find that it is a dead end.
Split into simpler sentences: Sunny bites a hole in the net, and using the rope, they climb down from the net. Using Violet's ersatz welding torches, they travel along the hallway at the bottom of the shaft, only to find that it leads to a dead end.