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