Check linuxrepos for download

pacman -Si linuxrepos/runescape-launcher


Repository      : linuxrepos
Name            : runescape-launcher
Version         : 2.2.10-1
Description     : RuneScape Game Client (NXT)
Architecture    : x86_64
URL             : https://www.runescape.com/
Licenses        : custom
Groups          : None
Provides        : None
Depends On      : cairo  gcc-libs  gdk-pixbuf2  glib2  glibc  gtk2  libcap  libglvnd  libsm  libx11  libxxf86vm  openssl  pango  sdl2  zlib
Optional Deps   : None
Conflicts With  : None
Replaces        : None
Download Size   : 4.66 MiB
Installed Size  : 10.77 MiB
Packager        : Wayne Wesley 
Build Date      : Sun 05 Jun 2022 12:25:40 BST
Validated By    : MD5 Sum  SHA-256 Sum  Signature

How to install from linuxrepos

pacman -S linuxrepos/runescape-launcher