Thanks to @elilla 's comment and his/her/their tutorial, I also want to share my solution for running this game on Arch Linux (also Manjaro, I think), using @elilla's comment as a template. Thanks again.
Installing on Linux in 2025 (Arch Linux):
The provided package depends on external libraries, which makes things hard especially because they’re i386 (32-bit) not amd64 (64-bit) libraries.
You needed to do this:
[#0]Check what lib is missing for VA-11HALL-A's runner
After you download this game with itch desktop app or ite's website, the entrance file of this game is called 'runner' just in the root directory of the game.
If you try to execute it, it will normally report an error of "file not found", which is usually caused by :
INCOMPATIBLE
You can simply check what 32-bit library (lib32) is missing on your system by running this: 'ldd ./runner'. Follow the steps below, I will show you how to install them.
[#1]Modify pacman.conf to let your pacman may install multilib (32-bit)
sudo vim /etc/pacman/pacman.conf
You can see the following lines in this file.
#[multilib]
#Include = /etc/pacman.d/mirrorlist
Just delete the '#' mark of these 2 lines and save this file. It's better not to modify other lines if you don't know this.
[#2]Install the following lib32 packages with pacman:
sudo pacman -Syu lib32-glibc lib32-gcc-libs lib32-zlib lib32-libxxf86vm lib32-mesa lib32-openal lib32-libxext lib32-libx11 lib32-libxrandr lib32-glu
[#3]Then there’s one library that runs a very old version (libssl 1.0.0).
We need to get it from yay since this package is no longer maintained by the official repo, it will not found if you try to install it with pacman:
yay -S lib32-openssl-1.0
Thanks to yay, Arch Linux users don't need to install it manually!
[#4]Finally, the sound
This works but without sound, what’s missing is Pulseaudio support for i386:
sudo pacman -S lib32-libpulse
Note: If some library is still missing, go back to [#0], and you can check and install them.
[Reference links]
How to install 32-bit lib on Arch Linux
https://forum.manjaro.org/t/howto-run-older-32-bit-native-linux-games-and-succes...
[Some words]
If this helps you, I would be very happy to see there are still somebody who loves this game in 2025.
Besides, I love Alma :3