Here is the full list of all 47 Grim Fandango Remastered achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Spend four years in the Eighth Underworld.
Play the whole game with tank controls. Tim demanded this achievement.
Play with the radio.
Crack a joke.
Revisit the place where you left Lola.
Meet the mechanics.
Hold to your commitments.
See Chepito on his way.
See Bruno on his way.
Spend three years in the Eighth Underwold.
Try to beat Domino in a fair fight.
Talk to Chepito about his bartering tactics.
Get Domino to explain the racket to you.
Try to explain to Meche.
Make the angelitos cry.
Talk to Chepito about how long he's been down here.
Spend two years in the Eighth Underworld.
Chant with the bees.
Have Glottis sing you the rusty anchor song.
Try to convince Aitor to take you down to the wine cellar.
Try to convince Verago to help you out.
Visit with Maximino.
Listen to Carla's whole story.
Talk to the worker bees about playing the game.
Have Olivia recite one of your poems.
Talk to Membrillo about why he's still here.
Look at the moon.
Try to get a passport from Chowchilla Charlie.
Ask Lupe about her organizational system.
Sample the Marillo de Oro.
Talk to Glottis about leaving.
Catch up on how the pigeons are doing.
Spend a year in the Eighth Underworld.
Check your job qualifications with Celso.
Ask Velasco about his eye patch.
Ask Glottis about the tree farm.
Try to intimidate the pigeons.
Try to guess Domino's password a few times.
Receive a message from Eva.
Learn of a nefarious plot.
Try to dig up some dirt on Meche.
Talk to Brennis about how he got to the machine.
Scare the living a few times.
Talk to Glottis about cravings.
Get the balloon twister to pop a balloon.
Use the hole punch.
Talk to Eva about how she got stuck here.