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