It doesn't work..

[MrToymaker-8]

Tried to unpack .BNK files (In my case these files are fro DOOM 2016) and the extracted files aren't showin' up after finishing the unpacking by the console.,

[mortalis13]

You have to review the possible errors in the console, and possibly go tool by tool. This unpacker is a set of multiple tools that process files each one on its stage: decode the raw audio, convert to audible files, convert to mp3 for example.
Or maybe it's a BNK file with another format, that's not the bnk recognized by the extractor from here, though it has a .bnk extension... Basically search how to extract audio from Doom, surely there exist some options.