JoshWilliams1711: I had never gotten to play games like Duke Nukem 3D, or Doom Classic before I played Doom (2016) on the Switch I got interested once I got to play Ion Fury I couldn't put it down, such an amazing game. The last levels and final boss where a major letdown though, still. I am looking forward to the mods and fan made expansions for the game!
I'll echo everyone else and say that you really should go back and play Duke 3D and the original Doom games. While Duke 3D was taken off GOG after 3DR lost the rights, the physical PS4/Xbox One version of Duke Nukem 3D World Tour is $20 most places. Doom, Doom 2, Final Doom and Doom 3 BFG Edition are on GOG, and while Doom 3 is more of a horror type game, the old Doom games are an absolute adrenaline ride.
Back to Ion Fury, however. I really only felt let down by the final boss. Couldn't really blame the last levels for being a bit industrial, seeing as they were doing the whole interconnected levels thing a la Half-Life and Heskel's fortress was the only logical end. HOWEVER, they could have done a lot better than a glorified zerg rush with a tiny ass weakspot. You'll realize this after the final boss of Duke 3D, which is absolutely breathtaking.