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