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.
Do hard time
Earn 27 Relics (gold or better)
Earn 26 Relics (gold or better)
Earn 10 Relics (gold or better)
Earn 5 Relics
Avoid whatever he's flinging at you.
Shoot a background UFO in Future Tense.
Die.
Shoot 5 of them in a single level.
Earn 99 Lives
Have your bazooka ready.
Just "forget" it. Repeatedly.
Fly, then die.
Defeat 5 enemies with Coco's Double Leg Drop
Don't feel guilty about jumping on him.
Seek and destroy
Earn 26 Gems
Earn the Key in Jaws of Darkness
Spin away an Extra Life
Earn 13 Gems
Defeat 5 enemies with Coco's Spin
Earn 30 Relics (gold or better)
Earn the Gems in the bonus levels
Discovered the Secret Exit in Road Crash
Discovered the Secret Exit in Dino Might!
Seek and destroy. Again.
Shoot the Imposter
Earn 42 Gems
Discover a Gem Path after earning a Color Gem
Defeat 5 enemies with Coco's Savage Hurricane Spin
Defeat N. Cortex
Earn 21 Gems
Defeat N. Gin
Defeat N. Tropy
Discover a Death Route
Defeat Dingodile
Defeat Tiny Tiger
Discover a "?" Bonus Path
Discover the Secret Exit in Diggin' It
Die as Crash.
Unlocked the Secret Exit in Hangin' Out
Unlocked the Secret Exit in Unbearable
Discover the Secret Exit in Bear Down
Defeat the Komodo Brothers
Discover the Secret Exit in Air Crash
Defeat Ripper Roo
Defeat N. Brio
Defeat Pinstripe Potoroo
Miss a lot of boxes.
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