Complete the outlined tasks, and earn the Trophies.
| Trophy | How to unlock |
| Platinum Trophy(Platinum) | Congratulations on getting all the trophies! |
| Secret Trophies | - |
| 10 Piece Combo Meal(Bronze) | Destroy your enemies with evil teamwork! |
| A Single Step(Bronze) | Welcome to Disgaea 3: Absence of Detention! We welcome new and returning players alike! Enjoy! |
| All-Pro Receiver(Bronze) | Let's cross this continent! |
| As the World Turns(Bronze) | If it spins, it's only natural to want to spin it. |
| BGM Lover(Bronze) | How 'bout buying some music for a change? |
| Call Me Nacho Cinco!(Bronze) | We're going to outer space, baby! |
| Ch.1 Netherworld Honor Student Complete(Bronze) | I am indeed the No.1 Honor Student! |
| Ch.2 Mao's Heart Complete(Bronze) | I was supposed to pour salt and pepper on it, instead of hot sauce! |
| Ch.3 The Freshmen Leader! Complete(Bronze) | Boss! Boss! Boss! |
| Ch.4 Almaz the Hero Complete(Bronze) | Babuu. |
| Ch.5 Grand War Complete(Bronze) | Hot Hot Sensitive Tongue Slash! Kiiiiiaaaaahhhhh! |
| Ch.6 The Reckoning Complete(Bronze) | Hmhmhm. |
| Ch.7 An Eye for an Eye Complete(Bronze) | Gimme an autograph later! |
| Combo No. 255(Bronze) | I won't stop hitting until you stop getting up. |
| Commando King(Bronze) | Now you're the Class World King! |
| Cross Fists as Friends(Bronze) | It's a story about a friendship born through fisticuffs. |
| Demon King: Have It Your Way(Bronze) | Force your will on them, like the demon your are! |
| Eryngi Baal Slayer(Bronze) | I'm not going to get my "a" back? |
| Finale Complete(Bronze) | I will...become the Overlord! |
| Finger Flicking Good(Bronze) | Mooove! My fingers are on fire!!! |
| First Setback(Bronze) | That was just a warm. Now I'm ready to go! |
| Giga Damage!(Bronze) | More training! You can do more! |
| Gotcha!(Bronze) | Yay! You got a new ally! |
| Hardcore Gamer!(Bronze) | Thanks for playing! But we suggest you take a break. |
| Hop, Step, Jump(Bronze) | Isn't jumping sooo much fun? |
| I Got Gummed...(Bronze) | Why me...? |
| I Had an Axeldent!(Bronze) | Axel never stops working! Even in the Item World! |
| It's Da Bomb!(Bronze) | Playing with bombs in Homeroom? You're quite an honor student. |
| Item Spelunker(Bronze) | Congratulations on reaching the 100th floor! You're on the right track to become a hardcore player! |
| IWCA Flyweight Champion(Bronze) | You are the Item World Champ! |
| Kneel Before Cat God!(Bronze) | *blush* Oh, you can stand, meow. |
| Magichangician(Bronze) | Transform! Yeah! |
| Majin Academy Complete(Bronze) | I shall take over this Academy! |
| Master of the Chain(Bronze) | Do massive chains! Use your brain to the max! |
| Mega Damage!(Bronze) | You gotta train! For starters, a million damage! |
| Omni Bonus!(Bronze) | It's only natural for a demon to take everything. |
| Playing Favorites(Bronze) | Aren't you happy to be surrounded by your favorite characters? |
| Puzzle Master(Bronze) | Erase everything! Train that brain! |
| Raspberyl Version Complete(Bronze) | You all graduate, today! |
| Reverse Pirates! Your Treasure is Mine!(Bronze) | Reverse Pirates, yeah! All that treasure's just for me! |
| Shopping Spree(Bronze) | As a proud demon, I'll buy everything at the store! |
| Shut Up Already!(Bronze) | I'll never stop talking! |
| Super Honor Student(Bronze) | The HQ at this school is truly amazing. |
| Survival Class: Passed(Bronze) | You truly are the Survival Master! |
| The Shamshank Redemon(Bronze) | I'm just testing your loyalty. |
| The Towertastic Ten(Bronze) | This is the epitome of a tower! |
| Treasure Hunter(Bronze) | Don't your legs feel stronger from all that jumping? |
| Trophy Shopper(Bronze) | I've been waiting for you in this Mystery Room! |
| PE Teacher Destroyer(Silver) | It's always been a dream to defeat a PE teacher... |
| Reverse Pirates! I Shall Take Your Innocents!(Silver) | Reverse Pirates, yeah! We're taking all the Innocents with us! |
| Tera Damage!(Silver) | Even more training! Good job! |
| Arcarnageologist(Gold) | Reaching the 100th floor...in Carnage! |
| Reverse Pirates! Everything is Mine!(Gold) | Reverse Pirates, yeah! Nothing is left in our wake... |