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