Here is the full list of all 32 RESIDENT EVIL 3 achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Complete the game on "Standard" or higher.
Defeat Stage 3 Nemesis.
Defeat Stage 2 Nemesis.
Follow Nicholai deeper underground.
Collect all weapons in the campaign.
Withstand the zombie siege.
Leave the clock tower plaza.
Defeat two enemies with a single shot.
Leave R.P.D.
Defeat zombie Brad.
Make it out of downtown Raccoon City.
Defeat Nemesis on the rooftop.
Cause Nemesis to relinquish an item.
Improve a weapon.
Expand your inventory.
Destroy a Charlie Doll.
Craft an item.
Escape from uptown Raccoon City.
Escape from Jill's apartment building.
Complete the game on "Inferno."
Place all jewels in the clock tower monument.
Complete the game with an S rank on "Inferno."
Gather all the fuses in the warehouse within 5 minutes.
Read all story files.
Destroy all Charlie dolls.
Unlock all safes, lockers, strongboxes, and pickable locks.
Complete the game on "Hardcore" or higher.
Complete the game on "Nightmare" or higher.
Complete the game with an S rank.
Complete the game without opening the item box.
Complete the game using 1 or fewer recovery items.
Complete the game in under 2 hours of play time.