Doom is a continuation/reboot of the classic mid-90s shooter of the same name, although at first glance you may mistake it for Rage which was also released by id Software in 2011. Unlike a lot of games that attempt to modernize releases of the past, Doom stays mostly faithful to the classic style that made the game so popular. You move around the maps extremely quickly, in a motion that isn't so much running as it is gliding. I like to imagine that your character has one of those hoverboard things strapped to his feet and that's what he's rolling around on. Most of the levels are based around key hunting puzzles that you have to solve when you aren't up to your eyeballs in hordes of demons. There are health and armor pickups that you need to hunt down when your health is low rather than simply hiding behind the nearest wall. And the weapons all feel satisfying to use and never need to be reloaded (except for one, which was almost never used for that exact reason).
Another thing Doom loves is it's upgrades. They come in three main flavors: character upgrades, weapon upgrades, and weapon upgrades for your weapon upgrades. This may sound confusing so I'll clarify: the weapon upgrades add a secondary firing ability to your weapons, while the weapon upgrades for the weapon upgrades further enhance that ability with things like more powerful shots and reduced cooldowns. The character upgrades and weapon upgrades are usually fairly well hidden in the game's large and open maps, meaning that exploration is both encouraged and worth your while. The weapon upgrades for your weapon upgrades on the other hand are given out like they're free samples. You get them for finding secret areas (which often contain the aforementioned weapon/character upgrades), completing in game challenges, or for simply just killing a lot of enemies. Since killing enemies is almost always required before you can proceed to the next area, you will get many of these upgrade tokens without having to sweat about it too much. And if you aren't feeling overpowered enough after all that, the game also places short term powerups in many of the battle zones. These range from very very helpful to very very useless, and I found I was really good at finding them almost immediately after I had finished killing all the enemies in the room.
If you're playing Doom for the story then you're probably playing it for the wrong reasons, but I'll go ahead and give you the gist anyway. Doom takes place on Mars and in Hell, which looks suspiciously like Mars but with more floating platforms and blood. A group of scientists were looking to solve Mars' energy crisis, and decided the best way to go about this was to use the energy from Hell. Along the way one of the scientists decided to release a bunch of Hell's demons on the promise that she would be taken care of by the demons, because that always works out so well for those people who decide to go that route. The story is mostly played out in the background, with the Doomguy quite obviously not caring about anything that doesn't involve shooting or punching things, and to it's credit the game understands that and allows you to skip past most of it. There are a few moments when the pacing grinds to a halt and you're forced to listen to dialogue, but they're fairly short. The only story you really need to understand is this: 1. You're a badass marine. 2. There are tons of demons with copious amounts of blood, squishy organs, and bones more breakable than a suicide pact between angsty teenage girls, 3. Go nuts.
Doom fills the void of arcade style shooter better than any game has in recent memory. It turns the mindless violence switch up to 11 from the very beginning and doesn't stop until the end credits. Enjoy killing the unambiguously evil enemies, hunt for all the secrets the game has to offer, and use the brief dialogue intermissions as an excuse to go refill your snack pile.