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