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.
See Bruno on his way.
Hold to your commitments.
See Chepito on his way.
Talk to Chepito about his bartering tactics.
Spend three years in the Eighth Underwold.
Try to beat Domino in a fair fight.
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.
Talk to the worker bees about playing the game.
Try to convince Verago to help you out.
Talk to Membrillo about why he's still here.
Listen to Carla's whole story.
Have Olivia recite one of your poems.
Visit with Maximino.
Try to convince Aitor to take you down to the wine cellar.
Try to get a passport from Chowchilla Charlie.
Look at the moon.
Sample the Marillo de Oro.
Talk to Glottis about leaving.
Catch up on how the pigeons are doing.
Ask Lupe about her organizational system.
Spend a year in the Eighth Underworld.
Ask Velasco about his eye patch.
Check your job qualifications with Celso.
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.
Get the balloon twister to pop a balloon.
Talk to Eva about how she got stuck here.
Use the hole punch.
Talk to Glottis about cravings.