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