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