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