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