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