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