Here is the full list of all 74 Crash Bandicoot N. Sane Trilogy achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Seek and destroy. Again.
Shoot a background UFO in Future Tense.
Earn 99 Lives
Die.
Shoot the Imposter
Shoot 5 of them in a single level.
Defeat 5 enemies with Coco's Savage Hurricane Spin
Have your bazooka ready.
Discovered the Secret Exit in Road Crash
Earn the Gems in the bonus levels
Avoid whatever he's flinging at you.
Earn 30 Relics (gold or better)
Discovered the Secret Exit in Dino Might!
Earn 42 Gems
Earn 21 Gems
Earn 10 Relics (gold or better)
Earn 5 Relics
Defeat N. Cortex
Discover a Gem Path after earning a Color Gem
Discover a Death Route
Defeat N. Gin
Defeat N. Tropy
Defeat Dingodile
Defeat Tiny Tiger
Discover a "?" Bonus Path
Fly, then die.
Don't feel guilty about jumping on him.
Just "forget" it. Repeatedly.
Defeat 5 enemies with Coco's Double Leg Drop
Earn 27 Relics (gold or better)
Unlocked the Secret Exit in Hangin' Out
Unlocked the Secret Exit in Unbearable
Discover the Secret Exit in Diggin' It
Discover the Secret Exit in Air Crash
Die as Crash.
Discover the Secret Exit in Bear Down
Defeat the Komodo Brothers
Defeat Ripper Roo
Do hard time
Seek and destroy
Earn 26 Relics (gold or better)
Earn 26 Gems
Defeat N. Brio
Earn the Key in Jaws of Darkness
Earn 13 Gems
Defeat 5 enemies with Coco's Spin
Defeat Pinstripe Potoroo
Miss a lot of boxes.
Spin away an Extra Life
Defeat Koala Kong
Earn the Key in Sunset Vista
Defeat Papu-Papu
Enter a Bonus Round after collecting 3 Character Tokens
In a single level, spin an enemy into another enemy twice