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