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 all enemies in Leech Hunter.
Collect all of only one color of Leech Charms.
Play Leech Hunter.
Finish Leech Hunter with rank A.
Finish Leech Hunter with rank E or above.
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.
Combine every type of herb with each other.
Finish the game without saving.
Finish the game without using a recovery item (including Green Chemicals).
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.
Complete the treatment plant.
Read all files.
Obtain all keys and use them all.
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.
Destroy a zombie's legs.
Defeat an enemy with a critical-hit headshot.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
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.
Create a Custom Handgun.
Attack an enemy to save your partner who is grappling with that enemy.
Try to push something heavy with Rebecca.
Use a Green Chemical.
Defeat a zombie by stomping on them.
Defeat Centurion.
Complete the train.
Defeat an enemy by burning them.
Create a Molotov Cocktail.
Change into a costume.
Defeat an enemy with a knife.
Defeat Stinger.
Break free of a Cerberus while they are biting you or trying to push you down.