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