Unnecessary dialogue, ESPECIALLY if that dialogue must be repeated ad nauseam in order to complete what should have been a bulk action. Animal Crossing NH, as much as I fucking adore that game, has got to be one of the absolute worst offenders in this regard.

Also, difficulty that isn't "tough but fair", and is instead "every enemy does 10x damage, has 500x HP, has their numbers increased by 5000x, and also you die in one hit." I'm exaggerating obviously, but my idea of a fun challenge isn't being given no room for error against overpowered enemies, it's the Souls approach; once I learn the patterns and flow of things, I should be able to almost play the game on autopilot. I still boot up DS3 all these years later just to relax, as I know the game THAT well now.