"100% Guide"

In this guide, I'll show you how to complete the 100% Completion run.
When you wake up, head over to Toriel's car and simply skim through the text and watch the cutscene.
When you arrive in class, talk to Noelle and select "Yes, Ask" when she wants you to do the project. Again, Skim the text. When Susie arrives, head out and talk with her. Make a reeeeeeealy though up, right and up movement to get to Susie. The timing is very hard, but with practice, you'll save around 1 second.
When arrive at the caves, mash all your buttons as fast as you can to wake Kris up. When you get to the first junction, go down and retrieve the Glowshard. Play the rest of the game as normal.
When you arrive at the castle, head over there and skip the Loooooooooooooooooooooong cutscene that you can play by choosing the right option.
For the Lancer fight, try to aim your attacks torwards the crit zone.
When you reach the dummy, fight it and perform all the actions, giving you the manual.
Skip the first Ruddin when you arrive at the Field. Head down torward the first candy tree and grab both Dark Candies. Grab 2 more candies. You'll need them for the Shop. Equip the Broken Cake. You'll see what you'll do later. When you reach the maze, turn left and retrieve the white ribbon. Equip it, like Ralsei tells you to. Fight the Hathys, cause you can't skip them. Skip the puzzle the first time to get Susie, and do the puzzle the second time around. Fight C. Round and go to the door.

When you reach the Shop, sell the Glow shard that you got at the caves and 3 dark Candies at the field. You Should have around 300 D$. Buy a Spooky Sword and Dark Burger. This Costs about 270 D$. Leave the Shop and head towards the gate. Fight the Jigsawrys that appear. Head back and buy a tutorial. You should have around 35 D$. Throw a D$ in the hole. Get back and solve the puzzle. Head up and enter the code: Heart, Swap, Heart, Spade, Swap, Spade. The gate should open and you can get the Broken Key C.
Try to avoid the white flashes and Ponmen as you reach K. Round. Continuously act by using Deep Bow 5 times.
Skip the Rabbicks and head up and left to get the ragger. Equip the ragger for Ralsei and Spookysword for Kris. Solve the puzzle at Susie's place: Heart, Spade, Heart, Swap, and Solve the puzzle at the Bloxel pass: Spade, Swap, Heart, Spade, Swap. Get the dice brace at the chest and have Kris equip his last armor piece. Solve clover's puzzle: Heart, Swap, Spade, Heart. Fight Clover. At a bake sale, by a lancer cookie and Fix the Broken Cake to get the Top Cake, the most useful item in the game. Fight a Bloxel. At the Silver dancer's area. Head down and retrieve the revive mint and look at the bottom of the roundabout. If you walk down, you'll find an invisible path. Skip the Rabbick and get Key B. Fight the Rabbick you saw earlier, Cause I have no idea how to skip it a second time. Create a Thrasher with the top parts of head, body and legs. Dodge the star boy that attacks you. Head up and flip a switch that opens a path for the trees into yet another maze.

The first maze solution is: Left, Right, Left (Avoid the Rabbick), and RIght. Part 2 is: Center, Right, left, Center. Decimate Lancer like its no one's business and end up in Jail after trying to get into the castle. When you regain control, Get the Shackles. You may need them for Susie later on. Pick Shackles twice more and then talk to Ralsei. You get control of Susie. Solve: Spade, Heart, Swap, Spade. Pick left and simply do nothing while fighting Lancer. Only press A during the end of Susie's speech bubbles. When you Regain control of Kris, go to the elevator and get Susie for real. Head to Jevil's prison and get the quest that Jevil gives you. Equip the Shackles to give Susie a power boost. Head to the Field and Talk with Seam about a strange prisoner. You'll get the last broken key piece. Head over to the Blacksmith and fix all the key pieces. Head to the castle (watch out for the Ruddin Ranger) and return to his prison, unlocking the door instantly. Fight Jevil, the hardest boss in this game, and get Devil's Knife. Go up the tower as usual. When you reach the Shop, You should have at least get a Rouls Roux, an Amber card, a Brave ax and a dainty Scarf. Equip the Knife and Card. Fight K. Round. This time you don't have access to the Deep Bow; instead you get Susie's idea, Throw. Aim for the Crown as it loosens it up by 35%. Do 10 turn Chaos king strats with the Knife, Ragger and Spooker. Head up and exit the underworld via the portal.

Outside, Leave the School and head to the hospital, where you meet Noelle and his dad. Skim through the long text and head out the hospital. Get to Sans' library and get his number. Head further right and talk with Alphys. Tell him he couldn't find any chalk and Skim through yet another long text. Head towards Agsore and get flowers for him. Head all the way to the right and speak with the lady in the lake, and accept her friend request. Tell her you're name is Kris. Give her the name "Onion" and Head home. When you talk with Toriel and either A. If pie is the top option, select me, or Asirel. or B. if Flowers is the top option, select it. Then head to your bedroom and go to bed. Time is when the last text box telling you you're going to bed disappears and the screen fades to black.
I hope you get to know how to 100% Deltarune in the fastest time now. Good luck.