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