Dialogue choices just for the hell of it.
Hollywood-style script writing "Captain, what are we going to do?! I don't think we can hold on for much longer" "This is MY SHIP, Cadet!!"
Illusion of choice that really just favors evil choices.
Random evil choices that really have no place in context.
Boring unimaginative story (Oh no, not the ALIENS!)
Uninspired, boring visual style. Usually these just go with the normal cookie-cutter styles. Goth, Punk, "gangstuh", etc...
Games that skimp on story details in order to more easily shoehorn dialogue choices into the character conversations.
bad animations.
Boring, styleless main character. (I gots a buzzcut, I'm cool, right guise? Also this is MY ship!)
Facial customization systems where it's impossible to make a character look the way I want them to.
Facial customization systems where the character always ends up looking ugly or boring because it's "realistic".
Bad hitreg or hit detection. It's pretty hard to like a game when I'm shooting an extremely high rate of fire weapon at someone who is almost point-blank, but I only hear a bullet impact every once in a while. Both the Call of Duty and Battlefield series suffer from this.
Horrible character balance. I quit blazblue (the first one) due to this.
Obvious game developer laziness.
MMORPG's that go with the cookie-cutter classes such as "Dwarf with the long braided beard who's a blacksmith" and "Elf with pointy ears, nice face, and bow and arrow"
Try hard game communities where everyone is seemingly angry at each other all the time.
Elitist game communities.