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