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