I downloaded the AshesStandalone_V1_51.zip file, but it looks like it only contains the windows executable. For our linux friends, unzip it, install gzdoom, and then run this command inside the "Resources" folder to play it on linux:
> gzdoom -config gzdoom-ashes.ini -iwad freedoom-0.12.1/freedoom2.wad -file AshesSAMenu.pk3 lightmodepatch.pk3 Ashes2063Enriched2_23.pk3 Ashes2063EnrichedFDPatch.pk3 +logfile log.txt