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