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