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