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