Full list of all 51 Crash Bandicoot 4: It's About Time achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Watch the 106% bonus ending
Earn ALL N.Sanely Perfect Relics
Watch the 100% bonus ending
Earn ALL of the Clear Gems
Earn ALL N. Verted Gems
Complete ALL levels in N. Verted mode
Earn ALL of the platinum Time Trial Relics
Earn ALL of the platinum Flashback Relics
Complete all Timelines
Make some noise!
Make music in an unlikely place
Aim and fire!
Complete any Timeline
Earn any Time Trial Relic
Defeat an enemy with Triple Spin
Pull off a Triple Spin
Defeat Dr. Neo Cortex… again.
Betrayed! By your worst enemy.
Defeat the Doctors N. Tropy
Grabbed a bushel of Bumpa
Earn half of the Clear Gems
Meet Ika-Ika
Play a game of Crate Combo
Play a game of Checkpoint Race
Complete a level with Pass N. Play enabled
Defeat Dr. Neo Cortex
Find the hidden Yellow Gem
Meet Kupuna-Wa
Do some target practice
Scare the cat hiding from a party
Beat a level in N. Verted mode
Beat any boss in N. Verted mode
Defeat N. Brio
Find the source of the Bumpa Berries
Find the hidden Blue Gem
Shut N. Brio up
Meet 'Akano
Complete a level as Coco
Defeat N. Gin and his Weapon of Mass Percussion
Find the hidden Green Gem
Try on a Skin
Earn any Flashback Relic
Acquire a Flashback Tape
Shut N. Gin up
Find the hidden Red Gem
Meet Lani-Loli
Crouch or slide into a double jump
Earn any N.Sanely Perfect Relic
Beat a story level without dying
Complete a Bonus Path
Spend some time surfin' the waves