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