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.
Finish the game on Hard difficulty.
Finish the game with rank S.
Kill 50 enemies with the Death Stare at full charge.
Read all files.
Put on Team Wesker costume.
Defeat all enemies in Leech Hunter.
Collect all of only one color of Leech Charms.
Defeat 16 bats in the church.
Finish Leech Hunter with rank A.
Use a Green Chemical.
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).
Defeat all bosses except Centurion using Rebecca.
Play the piano using Rebecca.
Combine every type of herb with each other.
Defeat Mimicry Marcus for the first time only using a knife.
Try to push something heavy with Rebecca.
Change into a costume.
Play Leech Hunter.
Finish Leech Hunter with rank E or above.
Complete the treatment plant.
Defeat Queen Leech.
Obtain all keys and use them all.
Attack an enemy to save your partner who is grappling with that enemy.
Defeat the Proto Tyrant.
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 a zombie by stomping on them.
Defeat Infected Bat.
Get picked up by the Infected Bat.
Complete the training facility.
Create a Custom Handgun.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
Defeat an enemy by burning them.
Defeat an enemy with a knife.
Defeat Centurion.
Destroy a zombie's legs.
Complete the train.
Create a Molotov Cocktail.
Defeat an enemy with a critical-hit headshot.
Defeat Stinger.
Break free of a Cerberus while they are biting you or trying to push you down.