It’s frustrating when some game devs only increase enemy health and attack power to increase difficulty. Depending on the game, I’m usually inclined to want smarter enemies. Fortunately some games do this.
On easy mode, I should be able to one shot a dude who doesn’t use cover well. On hard mode, the same guy should be moving around and using cover and shooting straighter. He shouldn’t just be a bullet sponge but still failing to use cover well.
Also, if someone is able to take multiple shots, their ability to attack should decrease. I get that someone wants to argue that it’s possible in real life that an assailant could take five bullets before stopping, but if I shoot them in the gun arm, they shouldn’t be able to shoot straight or at all. One percent health shouldn’t involve the same threat level as 100%.