Converting the .deb files given to .rpm -
Searching around, I found alien to convert between the two formats. Upon trying to install the rpm, it has a missing dependency of "libbz2.so.1.0()(64bit)". When forced to install anyway, it can't find the libbz2.so.1.0 library, big surprise there. Why it's confusing is that in my /lib folder I have "libbz2.so.1.0.6", which appears to be a version of what it's looking for (symbolic linking it to the file name it wants doesn't work either).
Wine emulation (Steam Proton really, but similar) -
Simplest error of them, it boots up, but partway through throws an error once it gets to I_InitInput.
Spoiler:I've grabbed dinput.dll from another source, but I'm not entirely sure how to make ZDoom see it.
Building Source -
Frankly this one I'm just in over my head. It appears to be using cmake, so I installed that (and cmake3) and pointed it towards the CMakeLists.txt file that it wanted, but it kicked out these errors upon running.
Spoiler: CMake Running ErrorsAny help would be much appreciated. If more info is needed, I'll be happy to provide.