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