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