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 on Hard difficulty.
Collect all of only one color of Leech Charms.
Defeat all enemies in Leech Hunter.
Put on Team Wesker costume.
Defeat 16 bats in the church.
Kill 50 enemies with the Death Stare at full charge.
Defeat Mimicry Marcus for the first time only using a knife.
Change into a costume.
Obtain all weapons.
Finish the game with rank S.
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).
Destroy a zombie's legs.
Finish Leech Hunter with rank E or above.
Finish Leech Hunter with rank A.
Combine every type of herb with each other.
Play Leech Hunter.
Complete the treatment plant.
Defeat Queen Leech.
Defeat all bosses except Centurion using Rebecca.
Read all files.
Obtain all keys and use them all.
Defeat the Proto Tyrant.
Try to push something heavy with Rebecca.
Complete the factory.
Fight off the Proto Tyrant.
Complete the laboratory.
Use a Green Chemical.
Create a Custom Handgun.
Get picked up by the Infected Bat.
Defeat Infected Bat.
Complete the training facility.
Play the piano using Rebecca.
Shoot down a Hunter or an Eliminator while they are jump attacking in the air.
Defeat a zombie by stomping on them.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
Defeat an enemy by burning them.
Defeat Centurion.
Defeat an enemy with a knife.
Attack an enemy to save your partner who is grappling with that enemy.
Complete the train.
Defeat an enemy with a critical-hit headshot.
Create a Molotov Cocktail.
Defeat Stinger.
Break free of a Cerberus while they are biting you or trying to push you down.