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