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