https://drive.google.com/open?id=0B2cSlWc2yl7ES1RPbEhRdjBrRlE

The usual spiel about copying the steamlink/ folder to the root of a FAT32 USB drive and booting the Link with it plugged in.

Compiled the Prboom-Plus from here https://github.com/superna9999/prboom-plus (The only modification I had to do was to remove the ./rdatawad line from the end of data/Makefile because that's a binary that gets run by the build script and it can't be run on the compiling computer)

Controller isn't supported at the moment. It has the option to enable but I haven't debugged trying to get the Steam Controller working with it.

Resolution starts out small but you can bump it up in Settings > General

There you have it: Doom on yet another device :D