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