Here is the full list of all 50 Mugen Souls Z achievements.
You obtained every type of shampuru.
Your Charm level exceeded 50%.
You absorbed all the star energy from the twelve worlds.
You dealt 100,000,000 points of damage at once.
You cleared 100 floors while betting 9,999,999 points.
You reached level 9,999.
You exceeded 999,999,999 Mugen Points.
You unlocked every single job.
You achieved victory with all possible command seals active.
You defeated the Moon God.
You exceeded 999,999,999 gold.
You dealt 10,000,000 points of damage at once.
You reached level 999.
You dealt 1,000,000 points of damage at once.
You made it to the 100th floor of the Mugen Field.
Your maximum combo exceeded 100 hits.
You used Blast Off at maximum power.
You saw the true ending.
You cleared Ivory World.
You made it to the 50th floor of the Mugen Field.
You obtained 50 types of shampuru.
You completed your first challenge in Challenge World.
You dealt 100,000 points of damage at once.
You cleared the game one time.
You cleared Sapphire World.
You cleared Jade World.
You cleared Amethyst World.
You activated Fever Mode.
You cleared Gray World.
You cleared Ebon World.
You cleared Crimson World.
You cleared Violet World.
You obtained 20 types of shampuru.
You cleared Silver World.
You cleared Rose World.
You used Blast Off.
You cleared White World.
You activated Damage Carnival for the first time.
You cleared Scarlet World.
You successfully used Captivate in battle.
You started a new game.
You obtained every last trophy! Truly YOU are the undisputed god of this game!
You obtained every single G-Part.
Your maximum combo exceeded 999 hits.
You activated Damage Carnival with everything unlocked.
You completed all challenges in Challenge World.
You conquered 7 World Redux.
You conquered Mugen World Redux.
You cleared a specific Ultimate Absurdity World.
You achieved an "Intergalactic Chou-Chou" sized Ultimate Soul.