I've thought about making a SnowGrave route for Susie, it's longer and has way more to do to get this route. I've written it so it can be added onto as the chapters progress! So here is the Chalk Dust AU!
Everything normal happens until you are given your first real choice, which is to listen to the tale. You must refuse to listen.
You must attack Lancer during the first fight.
You must defend against the Ralsei dummy until Ralsei stops trying to teach you.
You must do a genocide route up to the point you meet up with Susie.
You continue your Genocide Route, even defeating C.Round via fighting.
When choosing a Team Name, choose Susie's paper.
Continue on from this point and fight K.Round for at least 5 turns before bowing.
Once Susie leaves your party you must continue on with Genocide.
You must be the one to deal all of the damage to Clover, have Ralsei defend.
Once everyone in the area is defeated you must go back and explore the area where you will find 3 pieces that will "inspire" you and give you Concept Item pieces.
When you get to the Thrash Your Own Ass section, you will be able to choose your concept pieces. When you put all 4 of them a new star will appear and it will be the term "Intense".
Once chosen Susie will come out, look at it and become slightly impressed. Lancer will voice his concern but Susie will shut him down.
When you continue you should see the two Rudinns fanning Susie as Lancer lays alone in the chair beside her.
Going through the maze you must follow the correct path until you see Susie. You then must follow her through the maze several times until you reach a dead end which she will be able to speak to her and then lead her out of here, leaving Lancer behind.
You then will see her run up ahead before turning back and challenging you to a fight. You must defend/heal through the entire fight. Acting [minus checking] will ruin the run, so will Fighting.
You must wait it out and get through her fight until Lancer comes out of no where to go and attack you. You must dodge the attack and let him go attack Susie. He will apologize and right after and the fight will end.
Susie will pick him up and begin yelling at him. You are given an option to speak, you must stay silent.
Lancer will promise it was an accident and she will let him go after he pleads with her.
Susie and Lancer will join your side.
Lancer will run off where he normally runs off. Susie will chase after him asking what is he doing and calling him a coward.
After you're captured Susie will escape and go to free you and Ralsei. She then sees Lancer, going immediately to attack him for his betrayal. Lancer will use all of his turns to Defend and will beg Susie to listen and explain how he came down here to free you all. Susie will spare him.
Susie will bring Lancer over to you and make him explain. You are given the choice to kill or spare him. You must spare him.
You continue on your genocide route as Lancer ran ahead trying to stop his dad.
You come up and meet his dad and beat him down. Ralsei heals him. You are at that point where he is about to kill Kris and Susie. Lancer will kill his dad to save you all. Ralsei will try to comfort him as you and Susie leave the DarkWorld.
You wake up and before you leave your room, you must go check out your drawer 3 times in a row without moving or skipping dialog. You will find the item [Chalk]
You will check out the Castel and then be told to go get the ball if stuff, but you will only have the items for Sean and Lancer. When checking the items you will be told that the others were destroyed.
Once your banished to do your project you must go find Susie's locker and shove the [Chalk] through the slots on the top.
You go though as if it were a normal genocide until you get to the Berdly fight. Susie must land the final blow to Berdly's cart.
Finally you will now have your choice to go with either Ralsei or Susie. You must choose Susie. She will celebrate similar to how she acted in the original universe with Lancer.
You are able to start killing solely with Susie at this point yet it is not recommended. So sometimes killing with only her is okay. You must not make it constant.
Once you have reached paths with Noelle she will go hide as the Queen appears and right after some dialog it will begin a fight. You must have Susie attack her as you defend. You are not supposed to kill her. You are to wait it out til Berdly comes and forces the Queen to flee.
Once Berdly is there he will try to talk with you, yet will be silenced by Susie who will threaten him til he leaves.
Noelle joins the team, unnoticeablely scared.
You now are to back track to the trash heap. As you do, use Susie to kill infront of Noelle.
Once infront of Spamton's shop, Susie will point out something that looks like the top of the machine that you found the concepts for. She will then talk about how if she could make it real, she would be able to slaughter people quickly. Noelle is clearly upset and fearful because of this.
You will go back to the area where you will normally see Ralsei and Susie eating cotton candy. Susie will shove the cone aside and will go up to Ralsei and lean against him. Calling him a nerd.
The party will split up again as Noelle has become too fearful to be around Susie or Kris. Yet she will not say this out loud.
You will proceed to go to the Pink Addison, which you will go through the dialog options. Then as you walk away they will stop you and offer you the [Dust Axe].
You do the whole money thing. You tell Susie to Get It over and over again. She doesn't understand what you mean by how to get it at first but once she understood she did it with a smile.
Susie now has learned * Banish Buster
There is a pile of dust where pink Addison stood.
You must go back and use Banish Buster on all of the enemies. Leaving piles of dust everywhere.
If you go check on Spamton, he will say he has a great deal to offer.
You must kill everyone and then go back to Spamton.
Spamton will look around for the item bit will become nervous as he tries to offer you something else.
Susie will pick him up and pin him against the wall, saying something along the lines of "Well I might as well just bite your head off for wasting our time!" Then something along the lines of, "Might as well make use put of you. Why not a snack?"
She then will open up her jaws and put her mouth around his head before throwing him back into the side of the dumpster. She will hold her [Dust Axe] to his neck. Saying how pathetic he was.
Then she proceeds to attack him. There is no remains left behind.
You continue onward with no upgrades.
You get through Mouse Puzzle 2 with ease as you tell Susie to destroy the puzzle. She listens to your command.
When you get to Mouse Puzzle 3 you will have to force Susie to do the puzzle. She will tell you that she isn't doing it but you will force her to proceed and do the puzzle.
You are forced to watch as she fails a few times. She will keep saying for you to just do it. You must refuse every single time she asks.
She will put the [Dust Axe] down at this point in time. Do not pick it up at this time.
As she works on the puzzle you must go back and go to the dumpster and investigate it. You will have the option to go inside and look through the trash. Do it.
You will find the item [Metal Fang Caps]. If you check the item you will see they are dirty. You will have the option to clean it with one of the scarf weapons. It will destroy the scarf item and cannot be fixed if you use it.
Now you must go back to Susie.
You go over to her axe and now you must take it.
Soon afterwards Susie will finish the puzzle, she will mock the game and laugh at it. Then proceed to walk over to where she left her [Dust Axe] and realize it's not there.
She will walk over to you and ask you about it. You are given the option to give her the Axe or the Metal Fang Caps. Give her the caps.
She will refuse a few times but you will force her to use them. She puts them on and the metal shards tear at her gums.
There are no enemies between Mouse Puzzle 3 and the Berdly fight.
You encounter Berdly, which he will stop you and say that he knows you were with Noelle and will ask you where she is. Susie will not speak.
Once the fight begins you must get your TP up to 100% before you can begin the dialog.
This is the point where you will force Susie to use Dust Bite. The following test will be an example of the dialog.
You demand Susie to use Dust Bite. She refuses. Saying she doesn't want to bite a nerd.
She will refuse again. Saying how nasty it would be.
She will say she would rather spill his guts than bite him.
She will say she doesn't need to take it and will leave.
Berdly will say something stupid here that will make her visibly angry.
She will then be shown dashing over to Berdly, opening her jaws before crushing his shoulder and neck. His body popping into dust in her mouth.
She will stand where above the smaller dust pile for a moment silently.
Her text sprite will be smiling as she turns around to look at Kris.
She will go and walk behind Kris to follow again. Susie will no longer use her Axe for combat.
From this point on it will be similar to the normal route except you will continue your genocide route.
You will be captured by the queen again. Ralsei will be captured too.
You pull out Lancer who will try to genuinely help this time. He will be clearly severely anxious.
This will lead to a security issue arising. A self defense mode will activate where you must dodge lasers survive until Lancer turns it off.
Susie will come out of the room as you come out of yours. She will go over and talk about how Lancer almost killed them and made him feel guilty.
Lancer will shy away as Susie will make an attack towards Lancer but will purposely miss. Siking him out.
Lancer will turn to stone and Susie will walk off without him.
You will continue onward but will head up to the Queens place. You will fight fight robot and skip the Berdly and Queen fight.
You will win then continue onward. Everything is normal except for dialog.
When you come out of the Dark World. Noelle will think Berdly went home early.
Susie will go outside and be ready for you to start to walk you home.
When you look around the computer room. It will be dusty.
During your sleep over she will be more clearly buddy buddy with you ever so slightly. Nudging you and hitting your back.
Everything else is normal.