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.
Withstand the zombie siege.
Defeat two enemies with a single shot.
Leave the clock tower plaza.
Leave R.P.D.
Defeat zombie Brad.
Make it out of downtown Raccoon City.
Defeat Nemesis on the rooftop.
Destroy a Charlie Doll.
Expand your inventory.
Improve a weapon.
Craft an item.
Escape from uptown Raccoon City.
Escape from Jill's apartment building.
Complete the game on "Inferno."
Cause Nemesis to relinquish an item.
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.
Collect all weapons in the campaign.
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.