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