Numbers in Role Playing Games
Okay, I get it. The game relies on numerical stats to run. That's cool, but when I find myself staring at a ton of numbers in a "Role Playing Game", how do I play my role? In real life, you don't see numbers everywhere to give you an idea of what's happening. It breaks immersion. I'd much rather say, "My warhammer is better to fight this guy in armor because it's a blunt weapon," than "My hammer is better because it has X% better armor penetration!" Technically, it's not even penetrating, it's just transferring controlled, concentrated force through the armor into my foe.
Unrealistic Health Systems
I'm not going to get shot to pieces in no body armor, crawl into a corner to hide, and walk out a minute later completely healed. In fact, I should have died from getting shot so much, or at least bled out without medical aid. Health bars oversimplify actual health, and the "bloody vignette" that is so popular nowadays is very similar. I'd like to have to actually worry if I've been shot if I'm one-shotting other people.
Poor Portrayal of Historical Fighting
Swords don't cut right through armor. Don't call a mace a hammer. Axes aren't giant behemoths that bisect people. You don't do a "shield bash," you strike them with the metal rim of the shield. People don't get bisected in combat. Knights weren't heavily armored foot-troops in large armor who aimlessly swung around longswords. You would not throw your shield out of the way to stab someone. Even DF is a bit unrealistic at times, but some games get it so wrong.
Perpetuating Stereotypes
A lot of people already look down on the gaming community, so stop. It's wrong anyway.
Perpetuating Women as Weak
In "Call of Duty: Advanced Warfare," a female soldier in a robotic exosuit that gave her super strength and other things was wrestled and nearly killed by a man in regular clothes. First, if she's a female soldier, she'll have trained hard and would probably match him in a regular fight. Second, she had a super-strength exosuit, so what the hell?!
Console Against PC War
People need to shut up about this already. Technically, "gaming consoles" are just specialized computers. They are all computers!
Slowed-Time Combos and Hyping-Up of Achievements
No, "Ryse Son of Rome," it was not cool that I just threw a man on the ground, stabbed him through the heart, and bashed his head in with the rim of my shield (points for the realistic shield hit, though) as I withdrew because all I had to do was press 3 buttons at the right time and you slowed down that time. How would I have failed?
Auto-Aim
If I just lock on and press a button to throw a spear at someone or shoot someone with anything, I did not aim. The game hit them, not me. I value marksmanship, not auto-ranged kills.
Exploding Headshots
Okay, I shot them in the head. They are dead. It does not need to explode. What, you're going to slow down time so I can see it explode in blood? Seriously?