These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Face of the Band: Asagi, to the point where people forget that there are four other members.
Narm: Despite Asagi's awesome vocal and visual skills, his performance skills are really awful at best, resulting in his horrendously choreographed, disjointed and forced pseudo-dancing, which has gained some notoriety among visual metal fans. Seriously, watch the PVs for "7th Rose" and "Der Konig der Dunkelheit", and try not to laugh while dancing along.
Anvilicious: The end credits talk on length about how nature seems to be dying.
Big Lipped Alligator Moment: In the original D, failing to reach the ending in time leads to Laura falling into her pocketwatch and a simple message to "Try Again". Apparently, this is meant to represent the mental dimension collapsing and Laura being dumped back into the real world, but that isn't communicated very well at all...
Not being able to go back the way she came, the game also doesn't make it seem like Laura has any choice but to press on despite her father's apparition consistently appealing to her to "Leave before it's too late". Maybe that is the way to leave.
Strangely enough, almost the entire initial premise of Laura going to her father's hospital to defuse a hostage situation is completely dropped as soon as the player gets whisked away to the castle at the very start of the game (the player only returns to the hospital in the last few minutes of the game.) The set-up could've been changed to Laura having to go to her father's spooky castle or something similar and literally nothing would've changed.
Love It or Hate It: The trilogy as a whole. The Happy Video Game Nerd, in a review series basically gushing over the series, admits that it's not for everyone, and each game has it's own glaring flaws (though D-2 he considered the weakest, since with D and Enemy Zero the flaws were purposeful design choices.)
Magnum Opus: The whole trilogy for Kenji Eno. It certainly helps that he retired from the industry (at least temporarily) after D-2 was released.
Narm: Some misplaced or just plain goofy sound effects, along with bad voice acting, makes some parts ridiculous.
The voice acting for Laura's father in D isn't very good. However, to be fair, the actor did a much better job screaming in a disturbing manner than acting out the regular dialog, such as in the scene where he begins to transform.
The big reveal, where we find out what "D" stands for. It comes completely out of left field and somehow manages to be predictable at same time, not to mention more than a little bit silly.
Padding: In an attempt to ensure that the player feels pressured by the time limit, several puzzles include elements blatantly meant to waste time, such as the Wheel.
The Scrappy: Half the comments regarding Kimberly in supergreatfriend's Let's Play of D2 are not that nice, mostly for her constant talking, redundant questions (a lot of the comments are mocking her tendency to ask Laura if she remembers anything before her Trauma-Induced Amnesia), and unprecedented hatred toward Parker, who is only trying to help.
Squick: The battle against Xilo eventually becomes this for obvious reasons.
That One Boss: D2's Martha, who is constantly moving, can cause a lot of damage, and her weak point is oddly hard to hit (her violin), meaning you have to slowly chip away at her health unless you get a lucky shot. The fact never stops saying the same thing increases the annoyance factor.