Hmm.... *scratches chin menacingly*
Frankly, any level that has me walking long distances while doing absolutely nothing story or fighting related bores me to death, in ANY game - good or bad. Character running speeds in many games - especially JRPGs for some reason

- tend to be somewhere between a gait and a slow trot in real life >.> I don't know why... though after watching some Asian girls run, I can understand where they'd get it for the JRPG females... No offense meant, but the little arm-swinging thing they do is purely entertaining to watch ^-^"
As for a specific game... hmm... I would have to say that the "dating sim" parts of Persona 3 irked me to no end. I'm here to play a game, not to take a girl to dinner or meet a guy at practice every fifteen minutes that I'm not fighting... get off my back, you ***** >.>
Also, that crap about the almighty Grim Reaper appearing when you stayed in the tower too long to whup your ass was just UGH! I thought I was supposed to be training, but apparently the game doesn't LIKE that... what the bloody hell?
EDIT: The sewer level in Parasite Eve... With the bats that blinded you every, single, fucking time >.< I know the phrase is "blind as a bat", but come on
