To install the game, mount your CD & run the installer with linux32 from the util-linux package :
# mount /dev/cdrom /media/cdrom $ linux32 bash /media/cdrom/setup.sh
Apply the last released patch :
$ linux32 bash rt2-1.54c-unified-x86.run
Patch the binary to use (system provided) SDL1.2 instead of the bundled SDL1.1
cd <installation-directory> patchelf --replace-needed libSDL-1.1.so.0 libSDL-1.2.so.0 rt2.dynamic patchelf --add-needed libX11.so.6 rt2.dynamic
Now we need a very old library, that has no practical use today and is abandoned since 20 years : smjpeg
The easiest way to get it is to extract the libsmjpeg-0.2.so.0 file bundled in the loki-compat-libraries tarball from https://www.improbability.net/loki/
LD_LIBRARY_PATH=. ./rt2.dynamic