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