Hello, my name is PangoBara and welcome to my walkthrough for Horrific Xanatorium. Horrific Xanatorium is a horror visual novel set in a world with a viral outbreak that results in people having delusions. The story follows the protagonist as he is placed in a mental hospital due to him having caught this virus.
Horrific Xanatorium can be completed in a very short amount of time by skipping all of the text at high speed. This walkthrough will assume you are doing that if you want the fastest completion possible.
Following all choices while actually reading the text won't change anything about the completion though, so feel free to read it!
Starting on the menu, go down to Options and change your settings to the following:
Text Speed - All the way right to the fastest
Auto Text - All the way right to the fastest
Skip - All
When you begin the game, pressing 
twice when text appears will start skipping the text rapidly. For the fastest completion, you'll always want to skip between choices.
Playthrough 1
Once your settings are all correct, go back to the main menu and press “Start” to start a new game.
1: Use it
1: I Want to Know Achievement
1: Be in a relationship.
1: Choose Reality.
1: Yes.
1: Give it up.
2: Don't be concerned.
1: Yes.
1: Be concerned.
1: Poke her cheek.
1: Go back to the previous choice.
2: Don't poke her cheek.
2: Return to the title screen.
If... Playthrough
Click “If…” down at the bottom to start a new different story.
1: I want to talk to Mone…
1: Go back to the previous choice.
2: I want to talk to Riza…
2: Return to the title screen.
Playthrough 2
Press “Start."
1: First Day in the Hospital.
2: Don't use it.
2: I don't want to know.
2: Don't be in a relationship.
2: Choose fantasy.
1: Go back to the previous choice.
1: Choose reality.
2: No.
1: Go back to the previous choice.
1: Yes.
2: Don't give it up.
And… that's the completion!