Full list of all 46 Resident Evil 4 achievements. It takes around 60-80 hours to unlock all of the achievements in the base game on Windows.
The base game contains 39 achievements, and there is 1 DLC pack containing 7 achievements.
Complete the main story on Standard mode or higher.
Complete the main story within 8 hours.
Destroy all Clockwork Castellans.
Obtain all treasures indicated on the island treasure map in a single playthrough.
Throw a grenade into Ramón Salazar's mouth.
Obtain all treasures indicated on the castle treasure map in a single playthrough.
Defeat a Garrador using only knives.
Obtain all treasures indicated on the village treasure map in a single playthrough.
Destroy a Clockwork Castellan.
Defeat Osmund Saddler.
Complete all requests from the Merchant.
Defeat Jack Krauser.
Kill 2 parasites inside a Regenerador with a single bullet.
Defeat Ramón Salazar.
Get the exclusive upgrade for a weapon.
Sell a single treasure for at least 100000 ptas.
Defeat the Verdugo.
Defeat 3 enemies at once with a flash grenade.
Use a cannon to defeat a zealot.
Defeat Bitores Méndez.
Rescue Ashley as she's being carried away by the enemy.
Defeat Del Lago.
Complete a game at the shooting range.
Upgrade a weapon.
Complete a request for the Merchant.
Parry an enemy with a knife.
Make it through both minecart sections in the underground tunnel without taking any damage.
Reach the top of the clock tower without the lift stopping once.
Escape on the water scooter without taking any damage.
Obtain all weapons.
Complete the main story on Standard mode with an S+ rank.
Complete the main story on Hardcore mode or higher.
Complete the main story on Hardcore mode with an S+ rank.
Complete the main story on Professional mode.
Complete the main story without using a recovery item.
Complete the main story using only knives and handguns. (Excluding specific battles.)
Complete the main story without talking to the Merchant once.
Earn an S rank in all games at the shooting range.
Shoot through and destroy 5 targets at the shooting range with a single shot.
Defeat El Gigante in Separate Ways.
Defeat Pesanta in Separate Ways.
Defeat Osmund Saddler in Separate Ways.
Complete Separate Ways on Standard mode or higher.
Complete Separate Ways on Hardcore mode or higher.
Complete Separate Ways on Professional mode.
Complete Separate Ways on Professional mode with an S+ rank.