Let's go back in time, right back to 1991 when Activsion released 'Hunter' for the Amiga and Atari ST. An action-adventure game that by today's view point would be classed as a Battlefield 4, Grand Theft Auto and Far Cry mix. Expansive, open worlds, a military theme, and the focus on small squads of soldiers or lone heroes. Well if you remember this fine game, then you'll be pleased to know Cherno was working on a total conversion based on the 1991 Amiga game, but instead using GZdoom which in-itself is a Doom port.