Here is the full list of all 47 Resident Evil 0 achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Defeat all enemies in Leech Hunter.
Finish Leech Hunter with rank A.
Collect all of only one color of Leech Charms.
Put on Team Wesker costume.
Kill 50 enemies with the Death Stare at full charge.
Finish the game on Hard difficulty.
Finish the game without combining herbs.
Finish the game without saving.
Finish the game without using a First-Aid Spray.
Finish the game without using a recovery item (including Green Chemicals).
Defeat all bosses except Centurion using Rebecca.
Finish the game with rank S.
Defeat 16 bats in the church.
Get picked up by the Infected Bat.
Play the piano using Rebecca.
Destroy a zombie's legs.
Defeat Mimicry Marcus for the first time only using a knife.
Read all files.
Play Leech Hunter.
Finish Leech Hunter with rank E or above.
Create a Custom Handgun.
Obtain all weapons.
Combine every type of herb with each other.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
Defeat an enemy by burning them.
Create a Molotov Cocktail.
Complete the treatment plant.
Defeat Queen Leech.
Obtain all keys and use them all.
Defeat the Proto Tyrant.
Try to push something heavy with Rebecca.
Complete the factory.
Fight off the Proto Tyrant.
Complete the laboratory.
Shoot down a Hunter or an Eliminator while they are jump attacking in the air.
Defeat Infected Bat.
Complete the training facility.
Defeat a zombie by stomping on them.
Use a Green Chemical.
Defeat Centurion.
Change into a costume.
Defeat an enemy with a critical-hit headshot.
Complete the train.
Defeat an enemy with a knife.
Attack an enemy to save your partner who is grappling with that enemy.
Defeat Stinger.
Break free of a Cerberus while they are biting you or trying to push you down.