Man, I had so much fun with this game. Pure, dumb, fun is what this game is. There is a little bit of a story, but in reality I think the story was sufficient for what this game was. This game is killing demons on Mars, in Hell and then back on Mars again. It's great. Unlike Doom 3, which was more of a survival horror game, this one is a straight-up action, shoot-em all game , where you rarely run out of bullets. There are so many different gun options: The Gauss cannon, machine gun, chain gun, plasma rifle, shotgun, super shotgun, the rocket launcher and oh, the pistol. I played the game in Normal Difficulty and found it to be just the right amount of difficult, I did die a bunch of times.
The sound, the voice acting and OH MY GOD that fantastic music by Mick Gordon make this an amazing gaming experience. I really liked this game. As for flaws, on PS4, I did experience some rather slow loading times, some framerate issues here and there, sometimes things didn't look as pretty as they should have. You know, just normal console stuff. But I will say that the story is kind of repetitive. Switching back from Mars to Hell, back and forth can get a little bit tiring, even if the level design is pretty sweet. The last boss was pretty hard, but nothing crazy once you figure out his patterns. The hardest demon was definitely the summoner, however I found it to be not as hard to beat once I learned to use the chainsaw appropriately.
Overall, this game is sweet.