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