This is the entire second part of the script, and will spoil major parts of the game! This is for people who want to help, or are just interested in the plot. Remember, SPOILERS!!

Distortion World.
Ruins.
The Ruins walls are being glitched by what seems to be black holes. Froggits run when they see you. Napstablook is glitched, and attacks you. NaptaGLITCH! Battle. You fix him. Afterwards, you head up to Toriel’s house. Broken. Pitch black inside. Empty. Ring ring. Larz calls. “Hey? Larz here. Before you go to the next area, I will present you with a reset button. Make sure you press that before moving on.” Click. You go downstairs. Right before the exit, RESET button. Chara debates pressing it. RESET.
Ruins Reset.
Flashbacks of different events during pacifist ruins. Dummy, Froggit, Napstablook and Toriel. You exit the Ruins.
Snowdin.
The snow seems to be melting. Trees are tipped onto the path ahead. There is a broken lamp. Several incomplete puzzles you must complete and finish. As you finish all of them, a strange amalgam wearing a red scarf, stretching each time the amalgam moved. PAPYRUS-A—L—M Battle. During the battle, you speak of puzzles. He seems to be coming back into his original form. You begin to spare. Each turn, his capability of speech gets better, until he is Papyrus once more. He is now your friend, thanking you for fixing him. He helps you through Snowdin Town, telling you how to help the other creatures. RESET.
Waterfall
You pass through some of Waterfall, it completely silent, Until you hear shouting. Undyne’s voice. She explains to her army to kill any humans spotted, despite what happens. You begin to move and rustle the grass. Undyne throws several spears, all missing. She waits for a moment before leaving. You continue through Waterfall, random monsters jumping out at you. A few rooms later, Undyne spots you and attacks you with her army. Random attacks fill the entire attack box, and leave you with 1 hp. You must run. You run all the way through Waterfall, pacifying groups of her army at a time, until, at a mountain, Undyne stops you. Undyne Battle. Throughout the battle, she realizes the monster she had become, and lets you pass. She gives you a gift. A chestplate and spear. She invites you to come over to her house sometime, which you do, and she explains why she became what she had.
Hotlands.
Lava is overflowing. Rafts stretch from one platform to another across Hotlands. The lab door is covered, but there is a hole in the wall instead. Lava is leaking it’s way inside. All but the second floor is filled. On the table is a hunk of metal. Mettaton…? battle. After it is repaired, Alphys opens a hidden door and runs out the backdoor. Behind the hidden door is… the True Lab. But it is empty, until the end. TORIEL-A—L—M battle. After the battle, all that is left is her soul. It flys off. Behind her are a group of notes. “She is now morphed. Just like the r e s t. Notes throughout Hotlands, explaining what happened. Alphys is at the end of Hotlands. Alphys? battle. RESET.
The Core.
Alphys helps you through the Core. The layout is completely different. Strange amalgams attack you. Papyrus calls to check up on you, and explains how he was amalgamated. As you reach the end, RESET.
New Home & Castle.
New Home. Larz calls and begins talking about what happened back in the Faded Lands. Larz lost his job, and was replaced with Selene. He explains somewhat on how the world became distorted. Papyrus calls again, but this time to ask if you know or have seen Sans. Judgement Hall. A strange figure stands before you, judging you for what you’ve done in the past. Papyrus rushes to defend you, but the figure blasts Papyrus away. Soriel battle. You must FIGHT them to split them apart. As you attack, they explain what happened. Sans grew distant from Papyrus. He found Toriel’s soul. Toriel was near death. She asked Alphys to fix her. But her soul was too strong when injected with Determination it stayed as a soul, and didn’t shatter. They FUSED. They eventually split. She guilt-trips Sans into (grudgingly) forgiving you, and realizes you regret what you did and that is why you are fixing it. Sans rushes to Papyrus to see if he is okay. Asgore’s throne room. Asgore stares you down. Asgore? battle. He slowly un-corrupts. You pass to the barrier. Gaster blocks you. Gaster battle. He refuses to let you pass. But he gives up, as you continuously spare, and don’t fight back, bringing you to the final RESET. But right before you press it… R3B00T battle. The internal coding and system is confused and refuses to let you reset, and takes a physical form to fight you. You must fix the code. After it is fixed, the system resets automatically. Undertale intro. Talk with Chara. Unfuse. Final save.

~TF4Y