Persistently trying to defend extremely unsatisfactory asspull shit, that completely goes against all pre-existing canon in a pretty well-establised franchise, as "artistic integrity." I'm looking at you, Casey Hudson.
Getting achievements for ridiculously easy shit such as watching a mandatory cutscene, or turning on a game for the first time.
The more ridiculous kinds of DRM, like Securom.
Having a cash shop to be able to buy your way through a game, instead leveling and upgrading your way to better weapons and abilities. Somewhat excusable in "free-to-play" because they need to make money to keep their servers running some how. Not at all excusable in a $60 game. Worse if you have to pay an online membership fee.
Intentionally leaving out content for the sake of selling it for extra, later. The Sims franchise does a lot of this shit.
Charging extra for "DLC" or touting it as a reason to buy the "Collector's Edition," when it's already on every basic game disk. For instance,
that N7 hoodie they were advertising as being part of the Collector's Edition for Mass Effect 3? Totally already on the game disk. You can straight up unlock it without downloading anything through save file editing.