METRO 2033 (three in one)

In this world, there are not only the famous reds or fascists who are hostile to what they hate, a clear example being the Nazis; there are also creatures capable of killing an unprepared group.

Nosalis are creatures already known to soldiers of all ranks, and they pose a threat. To kill a group of Nosalis, you only need perfect accuracy to hit them in the head or a lot of luck. If you find one standing in a place that isn't too high but isn't blocked by sunlight, it's best to kill it, as this can be an alarm that calls for more Nosalis.

Flying beasts, I don't remember their real name but they would be like flying Nosalis that are harder to kill and with them you should stay indoors if you hear them roar or if you hear them flapping their wings more loudly. If you try to kill one, there are two possibilities: either you are a very reckless person who thinks they know they will kill it, or you are a suicidal person who wants to die immediately.

Mutants, who were once human and are now humanoid mutants, are very aggressive. If you see one, it's more than obvious that it's not alone. They attack quickly but are somewhat fragile compared to the Nosalis, capable of throwing rocks at you if they see you within medium range.

And lastly, and most importantly, the cannibals. If you see a place where you smell something very rotten and hear a radio signal coming from there, there are two options: if you are a trained and skilled soldier, prepare to massacre those who ate women and children, but if you are very naive, you could end up being their main course if you come alone without preparation.

In the subway world, if you choose to live even in the tunnels, the only currency there is military-grade bullets, which you can use to buy weapons, first aid kits, and ammunition for your weapons.

The most basic weapon would be the "bastard," a submachine gun with the aesthetics of a handmade Sten gun. It heats up quickly when fired, increasing the spread, hence its name.

The most common weapon is the AK-47 assault rifle, capable of withstanding sand or snow inside and remaining functional without being damaged.

The most common handgun would be the revolver, which has a magazine that you can modify to have its maximum capacity, such as 8 bullets in the drum, and with a silencer, it is the most recommended secondary weapon if you want something versatile, quiet, and accurate.

The only usable shotgun is the semi-automatic, capable of holding 6 cartridges and expending them instantly, dealing significant damage at short and medium range, but it is slower to reload.

The sniper rifle is one of the few weapons, along with the shotgun, that does not have a silencer. It is a very noisy lever-action rifle, but very impactful when used by the best people.

The second most popular sniper rifle variant, the "tikhar," is a pellet-firing sniper rifle capable of loading 9 or 10 pellets in a cartridge. It operates using compressed air for greater impact, making it the quietest and most beloved by sniper-loving soldiers.

The shotgun pistol is one of the most overlooked yet complex weapons to understand. Its biggest drawback is that you can only load one cartridge into the muzzle. It has a hybrid appearance, combining the features of a revolver and a flare gun. It's a weapon best suited for a scavenger who's more interested in getting shot than giving it.