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!
Watched the Human Ending.
Watched the Lowee Ending.
Obtained a total of 100 million Credits.
Watched the Lastation Ending.
Watched the Leanbox Ending.
Watched the Holy Sword Ending.
Cleared all Stella's ☆ Dungeon levels.
Watched the Conquest Ending.
Watched the True Ending.
Cleared Chapter 7.
Defeated the hidden boss, Delphinus.
All characters have attained Level 99.
Discovered 200 Plans.
Kei Jinguji joined the party.
Cleared Chapter 6.
Watched the Planeptune Ending.
Histoire joined the party.
Chika Hakozaki joined the party.
Watched the Normal Ending.
Fought 500 battles.
Mina Nishizawa joined the party.
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!
Inflicted over 100,000 points of damage.
Cleared Chapter 3.
Cleared Chapter 2.
Performed an 80-hit combo.
You have met Rom and Ram.
Fought 100 battles.
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.