Here is the full list of all 51 Hyperdevotion Noire: Goddess Black Heart achievements.
Attained the True Ending. "Let's work together and protect Gamarket!"
Leveled all characters to 99. "You maxed EVERYONE'S level?! Really?! Geez, you're as focused as a laser beam."
Maxed Lid's Lily Rank with everyone. "I'm friench...friends with ebbrybun?! Erm... Everyone?!"
Maxed Wyn's Lily Rank with everyone. "Awesome! Scrimmage match, me vs. everyone!"
Earned a total of 9,999,999 Credits. "Huh? Am I rich? Oh, it's cumulative. No reason to horde Credits, right?"
Leveled a character to 99. "You maxed someone's level? That's...pretty dedicated of you."
Maxed Vert's Lily Rank with everyone. "What a lively group of girls."
Maxed Little Rain's Lily Rank with everyone. "I'll try not to be bothersome..."
Maxed Sango's Lily Rank with everyone. "Ohohohohoho! Such a pleasant offering!"
Maxed Vio's Lily Rank with everyone. "Wanna become rotten with me?"
Maxed Saori's Lily Rank with everyone. "Let's all enjoy the feeling of falling in love."
Maxed Generia G's Lily Rank with everyone. "I can collect data to my heart's content!"
Maxed Lady Wac's Lily Rank with everyone. "Such a delectable spread of entrees to enjoy..."
Maxed Tsunemi's Lily Rank with everyone. "Let's sing together..."
Maxed Blossom Aisen's Lily Rank with everyone. "I'd love to put on a show with you all."
Maxed Ryuka's Lily Rank with everyone. "What a diverse group of girls. I love it."
Maxed Ai Masujima's Lily Rank with everyone. "Please help me to become an amazing idol!"
Maxed Moru's Lily Rank with everyone. "We're all monster hunting pals!"
Maxed Poona's Lily Rank with everyone. "Yaaaaaay... Everyone is my friiiiend..."
Maxed Ein Al's Lily Rank with everyone. "Thus, my fate has grown intertwined with theirs..."
Maxed Estelle's Lily Rank with everyone. "Bonds are legendary!"
Maxed Resta's Lily Rank with everyone. "I find everyone to be a precious friend."
Maxed Lee-Fi's Lily Rank with everyone. "We should all try to become the best we can be!"
Maxed Blanc's Lily Rank with everyone. "Friends are good to have."
Maxed Neptune's Lily Rank with everyone. "Don't tell Noire, but this is still my game. She just got a logo."
Made a [Godly Game] Disc. "I can't believe you made a Godly Game! Keep at it, okay?"
Maxed Noire's Lily Rank with everyone. "I finally have a legion of friends!"
Cleared Chapter 9. "Finally, peace at last! I'm so glad it's all over."
Attained the Good Ending. "So much happened, but nothing really changed. That's okay, I guess."
Got all the best stuff for Noire's room. "Wow, this place is amazing now... It's exciting to just look around!"
Challenged 100 missions. "I've gotten used to fighting, but I can't let my guard down!"
Dealt 9,999 damage. "That was really something! Nothing can survive a hit like that."
Answered all of the requests with Noire. "I guess everyone's satisfied. I hope they are, anyway."
Cleared Chapter 8. "Something really bad is happening. C'mon, let's keep our guards up."
Cleared Chapter 7. "Go figure. Trouble comes when when you least expect it..."
Cleared Chapter 6. "Saori likes...HIM? Ack! Wh-What? I wasn't thinking about you or anything!"
Cleared Chapter 5. "Neptune is nothing but trouble. I'm glad that's settled."
Developed 50 different items. "You've sure made a lot of items. I guess you're quite the pro now."
Cleared Chapter 4. "Ai's got guts to do what she did... Well... At least she's with us now."
Cleared Chapter 3. "Is being a hero that important? Why can't they both be one...?"
Cleared Chapter 2. "I'm happy to see my old friends coming together like this."
Challenged your first sub-mission. "You signed us up for a sub-mission? Well, let's use that system wisely."
Developed an item. "Not bad for your first time. I look forward to more in the future."
Developed a Game Disc. "Game Disc development was a success. Let's use these to gain an advantage in battle."
Cleared Chapter 1. "This is quite a predicament, so let's work hard together."
Started a new game. "I've been waiting for this day! It's my turn to be the star!"
Made your first purchase from AMAZOO.nep. "Spend your money wisely, and then gussy up my room!"
Answered your first request with Noire. "Well, that was easy. Let's keep it up, okay?"
Challenged your first mission. "I feel a lot weaker than before... Even so, I won't let it hold me back!"
Retried a story mission for the first time. "You wanted to retry a previous fight? It feels a little paradoxical, huh?"
Cleared the prologue. "Our first step toward uniting Gamarket!"