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