Here is the full list of all 36 Super Neptunia RPG achievements.
You defeated your first monster.
You opened your first treasure chest.
This is proof you've played Super Neptunia RPG thoroughly. You're a true hero!
Your power as a Goddess has returned.
You obtained Histoire.
You defeated the Ultimate Dragon, and protected the future of Gamindustri.
You ate an eggplant.
You went to the hot springs with everyone.
You saved Noire.
You were able to chain a large combo.
You decided to do your best as a Goddess once more.
Vert officially became a party member.
Neptune reached Level 100.
You defeated 300 enemies.
You opened many treasure chests.
Noire and Blanc became party members.
You acquired 500,000 total Credits.
You were able to witness the form of the First-Gen Goddess, "Chrome Heart."
You tore Histoire, and turned back time.
You yelled "hehe Chromey-kins xoxo.".
You enjoyed the Octopus Party.
Noire began singing in her sleep.
You had a mental discussion.
You enjoyed a game for 3 nights.
You saw your first Break Attack.
You are now able to summon Puddingo.
You got a Game Over.
You collected all 7 Tomes.
You cleared 15 different Hunt Quests.
You acquired 50 different weapons.
You acquired a total of 100 different accessories.
You've played as Neptune over 100 times.
You acquired 250,000 total Credits.
You learned 50 different Skills.
You defeated the Metal Dogoo.
You cleared many quests.