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