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