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