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