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.
Play Leech Hunter.
Finish Leech Hunter with rank E or above.
Complete the treatment plant.
Finish the game without using a First-Aid Spray.
Defeat Queen Leech.
Defeat all bosses except Centurion using Rebecca.
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.
Combine every type of herb with each other.
Destroy a zombie's legs.
Defeat 16 bats in the church.
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.
Shoot down a Hunter or an Eliminator while they are jump attacking in the air.
Defeat a zombie by stomping on them.
Try to push something heavy with Rebecca.
Use a Green Chemical.
Change into a costume.
Defeat Centurion.
Defeat an enemy by burning them.
Break free of a Cerberus while they are biting you or trying to push you down.
Defeat an enemy with a critical-hit headshot.
Attack an enemy to save your partner who is grappling with that enemy.
Complete the train.
Create a Molotov Cocktail.
Defeat an enemy with a knife.
Defeat Stinger.
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 Mimicry Marcus for the first time only using a knife.
Obtain all weapons.
Put on Team Wesker costume.
Finish Leech Hunter with rank A.
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.