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.
Kill 50 enemies with the Death Stare at full charge.
Finish the game without saving.
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).
Obtain all weapons.
Finish the game with rank S.
Defeat all bosses except Centurion using Rebecca.
Combine every type of herb with each other.
Defeat 16 bats in the church.
Destroy a zombie's legs.
Defeat Mimicry Marcus for the first time only using a knife.
Collect all of only one color of Leech Charms.
Finish Leech Hunter with rank A.
Finish Leech Hunter with rank E or above.
Play Leech Hunter.
Defeat all enemies in Leech Hunter.
Change into a costume.
Defeat Queen Leech.
Complete the treatment plant.
Read all files.
Obtain all keys and use them all.
Defeat the Proto Tyrant.
Complete the factory.
Fight off the Proto Tyrant.
Complete the laboratory.
Create a Custom Handgun.
Defeat Infected Bat.
Get picked up by the 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.
Try to push something heavy with Rebecca.
Use a Green Chemical.
Defeat Centurion.
Defeat an enemy by burning them.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
Create a Molotov Cocktail.
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 an enemy with a knife.
Defeat Stinger.
Break free of a Cerberus while they are biting you or trying to push you down.