Here is the full list of all 41 Hyperdimension Neptunia Re;Birth2: Sisters Generation achievements.
You played so much, everyone now agrees that Nepgear is a good main character, too!
Obtained a total of 100 million Credits.
Cleared all Stella's ☆ Dungeon levels.
Watched the True Ending.
Cleared Chapter 7.
Defeated the hidden boss, Delphinus.
Discovered 200 Plans.
All characters have attained Level 99.
Histoire joined the party.
Kei Jinguji joined the party.
Mina Nishizawa joined the party.
Chika Hakozaki joined the party.
Cleared Chapter 6.
Watched the Leanbox Ending.
Watched the Lastation Ending.
Watched the Human Ending.
Watched the Lowee Ending.
Watched the Planeptune Ending.
Watched the Holy Sword Ending.
Watched the Conquest Ending.
Performed an 80-hit combo.
Watched the Normal Ending.
Cleared Chapter 5.
Rom's and Ram's HDD versions have been powered up!
Uni's HDD version has been powered up!
Cleared Chapter 4.
Nepgear's HDD version has been powered up!
Cleared Chapter 3.
Created your first Game Disc.
Cleared Chapter 2.
Inflicted over 100,000 points of damage.
Fought 500 battles.
You have met Rom and Ram.
You have met Uni.
Cleared Chapter 1.
Fought 100 battles.
Created your own original combo setup.
Made use of Stella's ☆ Dungeon for the first time.
Used the Remake System for the first time.
Engaged in your first random encounter.
You began your adventure.