Here is the full list of all 61 NGU IDLE achievements. It takes around 200 hours to unlock all of the achievements on Windows.
F's in chat for you, 'cause you're in for a world of pain.
Defeated the Traitor and earned the final END piece.
Wishes Unlocked!
Obtain 1 Quadrillion of Resource 3!
Obtain 1 Billion of Resource 3!
Obtain 1 Trillion of Resource 3!
You can give this resource its own name in the settings menu!
Obtain 1 Million of Resource 3!
Hacks Unlocked!
Completed your first troll challenge... I'm sorry :c
Took the plunge into Evil Difficulty for the first time.
Survive an attack from an Exploder type enemy!
You defeated them all! Now to move on to EVIL difficulty...
Wear a set of gear on your body, all at level 69.
Boss 290 Defeated!
Obtain 9 QUINTILLION Magic, the most you can have in the game!
Obtain 1 Quadrillion Magic!
Obtain 9 QUINTILLION Energy, the most you can have in the game!
Boss 280 Defeated!
Obtain over 1 Quadrillion Energy!
Questing Unlocked!
Boss 270 Defeated!
Boss 260 Defeated!
Boss 250 Defeated!
Boss 240 Defeated!
Boss 230 Defeated!
Boss 220 Defeated!
Boss 210 Defeated!
Boss 190 Defeated!
Boss 200 Defeated! Oh snap, they have red skulls now!
Boss 180 Defeated!
Boss 170 Defeated!
Boss 160 Defeated!
I'm so proud of you.
Boss 150 Defeated!
Boss 140 Defeated!
Boss 130 Defeated!
Gold Diggers Unlocked!
Boss 120 Defeated!
Boss 110 Defeated!
Obtain 1 Trillion Magic!
Obtain over 1 Trillion Energy!
Beards Unlocked!
Boss 100 Defeated! Ooh, now the skull is all blue and shiny.
Boss 90 Defeated!
NGU's Unlocked!
Yggdrasil Unlocked!
Boss 80 Defeated!
Boss 70 Defeated!
Obtain over 1 Billion Energy!
Boss 60 Defeated!
Obtain 1 Billion Magic!
Boss 50 Defeated!
Boss 40 Defeated!
Obtain 1 Million Magic!
Obtain over 1 Million Energy!
Blood Magic Unlocked!
Boss 30 Defeated!
Boss 20 Defeated!
Unlocked the Augmentation Feature!
Boss 10 is uh... it's defeated. You defeated it. The name basically says it all.