You may have heard, regarding firearms, to aim at “the center of mass”. Gamers know that this is pernicious nonsense. In most cases, gamers aim for the head. If the target has no obvious head, they aim at the glowing bits of anatomy or the bits that flash when hit. In extreme cases, it is best practice to run up to your enemy like a doughboy going over the top, fire an entire clip directly into his face at point blank range, run away, and circle back after reloading. In any event, rest assured that 99.9% of enemies have a weak point somewhere, and it isn’t center mass.
Guns require no maintenance beyond reloading. Jamming and overheating are myths to be ignored.
Every culture throughout history has fielded at least one special type of military unit that has advantages (greater attack strength, higher defense, cheaper to produce, etc.) over other units of that type. These special units will be chosen based on what a 14 year old thinks sounds bad ass, not actual historical performance. Therefore, if Romans are present, the special unit will be the Praetorian Guard, nevermind that they were imperial bodyguards who rarely participated in war and mostly notable for their political influence.
There are few practical differences between genders, except breasts. Breasts are the source of a woman’s power. That’s why woman’s chest armor requires special tit compartments. These compartments disappear if a man puts on the armor. This also explains why breasts are heavily armored. Unimportant bits like women’s limbs, heads, and throats require no protection.
The better the armor, the more unlikely and decorative it is. Unadorned armor seems practical as it would be lighter and more likely to deflect blows, but no. Ditch that junk and get something made of unlikely sounding material and covered in filigree, points, and ornamental statuary. The more unlikely the material, the more effective the armor. Gold is good. Demon organs are better.
Waterfalls are the most common geographical feature. The average river has a waterfall every 100 meters. It will also, at some point, flow completely underground through a system of caves or tunnels. The underground portion of a river’s channel begins and ends with a waterfall and has waterfalls every 50 meters on average.