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