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