The directory contains the "WAKER - Linux 0.6.x86" executable, the "WAKER - Linux 0.6_Data" folder, and an additional "__MACOSX" folder that probably isn't supposed to be there (but also probably isn't breaking anything by itself).
I'm guessing that the issue is due to differences in 32-bit and 64-bit. I'm not well-versed with Linux, but searching "libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory" seems to yield quite a few solutions. Next version, I'll build a universal Linux build.
Thank you for letting me know, and I'm sorry that I can't help you further at this current time.
Yeah, the problem is the 32-bit variant of libgtk2.0-0 aka libgtk2.0-0:i386 missing by default. For now it’d be best to just include it as a dependency.
sudo apt install libgtk2.0-0:i386
for one’s terminal novice needs. Also libgtk2.0-0:i386 is itself dependant on libatk1.0-0:i386 libgail-common:i386 libgail18:i386 (not relevant for you, akirassasin)