I'd recommend checking out the Far Cry games, from Far Cry 2 onwards.

Also, while not necessarily exactly the thing you're looking for, the Sniper Ghost Warrior series offers a lot of good stuff. especially SGW3 and later are really fun and have pretty decent gunplay and the games can be played pretty nicely without focusing on the sniper aspect.

And if you feel like doing even more snipering, Sniper Elite gives you some NICE slow-mo X-ray closeups of your bullets destroying your enemies, but the gunplay besides Snipers isn't that fun.

I'll second the recommendation for Far Cry, particularly 3 and 4. Also, have you played Crysis? Later in the game it will move away from human enemies, but most of the game ought to be what you're looking for, and it's genuinely one of the best FPS campaigns ever.

I think you might enjoy Trepang2. It is heavily inspired by the combat in F.E.A.R., has unlockables and arena modes for some replayability. There is a demo and a sale on GOG.

I would say Division 2 But that is online only, stupid Ubisoft.
Another option would be Escape from Tarkov while using the Fika PvE mod.

Ghost Recon Wildlands?

If you like r6 siege's terrorist hunt, perhaps you will like Ready or Not.

Or you can look for older games like SWAT 4 on gog.com.

I know it's not what you asked for but i think you would enjoy the doom games, specifically eternal but 2016 is also great.

It has great campaign, great music, arguably the best combat system in a shooter game, it's highly replayable, 20€ with all the dlcs when on sale and when played on higher difficulties it becomes extremly technical.

It also has a multiplayer mode but i don't know too much about it

Sniper: Elite? The first 4 games go on sale on steam fairly regularly. I played the 5th one with GamePass and I actually really liked that one. The levels are huge and can take you anywhere from thirty minutes to a few hours, however you want to play.

In the 5th one, there are also settings to make it ultra-realistic. I haven't played with those, but I've seen gameplay and it's almost like a different game.

I don't see Soldier of Fortune mentioned, so this is my pick. Yes, it's old, but back in the day it had the best gun play I saw. Haven't played it in over decade, but it can't be that bad, can it?

Unreal Tournament used to be my go-to... 25 years ago. I had the bots set up just right, so if I got a good look at one, I knew what I was up against. Some were harder than others. You could customise each bot, so you really had some pretty fine control over the gameplay.

As best I can tell, the modern iteration of Unreal Tournament is called "Fortnite," which is nice because it's free to play, and it's fucking gorgeous, but all the paid content, the gestures and memes, it just wears me out. I just wanna shoot. It works best when one of my little nephews is online and they wanna team up, I let them do the memes and stuff and I circle around and flank their enemies. I'm in my 40s, pair me up with a grade school kid who can play decently and we win every time. It's funny.

As much as people dump on the game, it has the gunplay I like and it's pretty to look at, but I wish there was just regular old Unreal Tournament still. I'm sure I could get the GOG version of UT'99 running on my Mac with Whisky; it's obviously not gonna run on my Switch or Xbox, where I can play Fortnite (Epic doesn't make it for the Mac anymore).

Otherwise, and when it's just me, it's Cyberpunk. I have it on both my Xbox and my Macs. Yes, it actually runs on a computer that's like 7.75"x7.75"x1" (and the M4 Mac is smaller, and more capable with ray tracing). No dedicated GPU

I played all 5 of the Sniper Ghost Warrior games. The Sniper Ghost Warrior Contracts games were even more amazing. The first Contracts game is on sale right now for 3€ on Steam.

These games have amazing gun control and sniping. Lots of fun. Can't wait for a third Contracts installment.

I'm going to suggest a funny little game I've recently been completely obsessed with; HOLE. I don't really know how to explain it. It's a PvE only "extraction-lite" shooter. You drop into a procedurally generated map and kill your way through waves of dudes in suits. As the waves drag on, they'll start showing up in body armor with better guns. You have to find your exfil point and charge it before leaving, kind of like Risk of Rain. Protip if you do end up trying this game out, you can pre-charge the exfil as soon as you find it, then leave it and keep going on the level. Just don't get lost.

The loot you're looking for is mostly currency; this comes in the form of dollars and data. You can use these to purchase upgrades for your base, and eventually your weapons. If you go "MIA" (get perforated by a Red Boss's flechette slinging shotgun or cut to ribbons by the Blueberry), you lose 90% of these currencies. Some special things must be successfully extracted. Some things (namely weapon/upgrade blueprints) are permanently collected once you pick them up, even if you don't make it out. I feel like they pulled a nice balance between creating a challenging experience but not making it frustrating.

Some things are "soft"; ammo is infinite, bullets are hitscan. There are "crunchy" bits, too. Your gun will occasionally jam. Your barrel will heat up, and getting it too hot will cause more malfunctions. The malfunction will always be an FTE/stovepipe, and you clear it by racking the slide or pulling the bolt. These malfunctions are less for realism, and more for inducing stress, but it's a nice touch along with the backrooms-esque spooky vibes. The reports of the guns actually sound really spot on. Suppressors sound correct, and there's even subsonic ammo to make them even better.

I think what this game really works on is the vibes. This game instills a very specific kind of stress no other shooter I've played does. It's SUPERHOT without the gimmick. It's John Wick the game. It's SCP Mobile Task Force simulator. It's quiet and spooky, then loud and angry, and back again. It's listening for footsteps and voices, creeping up behind them, and getting away scot-free. Or maybe turning around and being face to face with a Yellow Elite in body armor and a juggernaut helmet. It's mentally screaming "where the hell is the microwave??" at yourself while the chatter of gunfire closes in on you desperately trying to get a fresh mag in and clear the jam before they're on you.

All in all, I seriously recommend it. It's $5, and I've gotten 10x my money's worth out of it.

• Suit for Hire
• Dagger Directive
• Peripeteia
• Bright Memory Infinite
• Cruelty Squad

I honestly might recommend escape from tarkov, it's just that I honestly don't respect the devs very much. But it's a very good game, you can play on PvE mode so no need to worry about timezones or anything like that. It has a incredibly in depth gun system since its pretty much just real gun mechanics, and I honestly love that about the game, it has taught me so much about guns and their attachments. The one thing is that it can have a low time to kill, but there's an in depth armor mechanic to the game that can change that. On top of all that, it's an extraction shooter, which conceptually is literally just an fps roguelite. Just a warning, it doesn't allow Linux users if you are one, even for PvE mode, but there's a mod you can get called SPT(single player tarkov), and it allows you to play on Linux on top of allowing you to mod it further.

Not human NPCs but Hunt Showdown 1896 has the best gunplay in any shooter I've ever played, not even close.

Find a popular multiplayer shooter that you like and play that.

You're not going to get any sort of "deep gunplay" against bots, no matter the game. The technology just isn't there yet. Sorry but you're going to have to put up with humans if you want a good, deep experience that doesn't become repetitive and predictable.

This doesn't meet your "human enemies" requirement, but if you're looking for realistic firearm mechanics, you might want to look at Receiver 2. It does have procedurally-generated layouts, as per your roguelike point, and most of the game is firearm mastery.

Soldier of Fortune 2: Double Helix

How realistic does it need to be? If you're down with being a Space Cowboy, Borderlands 2 is the best in the series. (So far. I'm still working on 4, and 2 should be cheap enough that it won't be a huge waste if it's not your style)

The finals is great.

They have a bot mode

A first-person Red Dead Redemption 2 playthrough, some fun gun progression and random encounters

Check out the Call of Juarez games, especially the first one and the second (Bound in Blood).