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