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