Resident Evil 4

7 Unlockables

Chicago Typewriter

Beat Assignment Ada to unlock the Chicago Typewriter. It has infinite ammo and can be purchased the Merchant.

Handcannon

To unlock the Handcannon, finish The Mercenaries with a 5 star rating on all stages with all charaters.

Maria

You must get 3000 or more points in Game D.

Thompson Gun

To unlock the Thompson Submachinegun, clear Leon's story mode (any difficulty) and complete Ada's story mode (Separate Ways). Purchase it from the Roma merchant when playing a new game plus.
Ada can also have the weapon available for her own side-story mission (Assignment Ada) simply simply clearing that particular mode once. Again, speak with the Roma merchant to access it.

PRL 412

Clear Leon's Story on Professional difficulty to unlock the PRL 412 weapon. It has two settings -- stun and kill (just like Star Trek) which you may determine by holding or tapping the fire button. It has infinite ammunition.

Costumes And Modes

Clear the main game (any difficulty) to unlock:

• Professional Difficulty
• Mercenaries Challenge
• Separate Ways mini-campaign
• Assignment Ada mini-campaign
• Alternate costumes for Leon, Ashley, and Ada Wong

PS2 Costumes

Clear the Separate Ways mode to unlock more costumes for Leon and Ashley.

7 Hints

Easy Krauser Kill on Professional Difficulty

When you fight Krauser, his arm will mutate and he will launch an attack. You should be facing him now as a CGI shows bombs in the vicinity. Once you have control again, immediately run toward Krauser. As he prepares to hit you, he will briefly leave himself open to attack. Unsheathe your knife and slash him, which will cause him to drop briefly to one knee. Now, wait for him to return to his feet and then slash him again. If you perform the slash at the moment he stands back up, he'll drop to his knee again. You can just continue slashing him at the same point, each time he rises, and you should be able to win the fight without even taking any damage.

Stock Up on Bug Eyes

After you set down the King and Queens grail you come to a part where there are a bunch of the "bug" type enemies. You must shoot the chains to drop a bridge.
If you have the patience to kill all the enemies, shoot the hive type thing in the middle of the room. It will go to a cutscene where it shows the hive fall into the pit and after there are about 10 items you can pick up, all of which are the "red, green, or blue eyes" used on the Butterfly Lamp. They can also be sold separately for easy money.

Conserving Ammo

When you are low on ammo but have to kill a few enemies try to group them together, shoot the frontman of the group in the head making him stumble then, run up and kick, this should knock down or push back all of the enemies. When they are on the ground simply knife them. Since they are grouped together you should be able to slash a few at a time killing multiple enemies quickly while only using one bullet.

Ashley's Sliding Puzzle

To complete Ashley's puzzle with ease, take a look at the layout below:
123
456
789
Numbering the slots from top to bottom in that manner, hit the following positions in this order: 4, 7, 8, 9, 6, 3, 1, 7, 9. Watch out for the knights!

Keep The Special Rocket Launcher

Without using a Gameshark (or similar device), you can keep the Special Launcher Ada throws down during the final fight. Simply unlock the P.R.L. weapon unlocked by completing Professional difficulty mode to waste Saddler. When Ada tosses out the Special Launcher, get it, and finish Saddler with the P.R.L. When you begin the game again, you will have Special Launcher (note still one shot).

Exclusive Weapon Powers

HANDGUN- 5 times more of a chance of critacal head shot
PUNISHER- Each bullet can penetrate up to five bodies.
RED 9- Increases firepower to 6.5
BLACKTRAIL- Increases firepower to 3.4
MATILDA- Increases magazine capacity to 100.
SHOTGUN- Increases the effective damage range of the gun.
RIOTGUN- Increases firepower to 10.0 and 8.0 at long range
STRIKER- Increases magazine capacity to 100.
RIFLE- Increases firepower to 30.0
SEMIAUTO RIFLE- Decreases firing speed to 0.42 seconds.
BROKEN BUTTERFLY- Increases damage to 50.0
KILLER7- No exclusive power!
TMP- Increases firepower to 1.8
Minethrower - Adds homing ability to mines

Maximize Leons Lifebar

This process incurs several continues, which have no bearing on the game's ending. At the first El Gigante fight, there is a Yellow Herb in the boss arena. Take this item and combine it with any of the Green Herbs in the same room and use it. This increases Leon's lifebar slightly.
Now let the boss kill Leon. Since the boss' room is at a map transition (the green OPEN command is a dead giveaway), this lets you continue right at the boss fight but with Leon's life increase from your previous attempt. Repeating this process will increase Leon's lifebar to maximum prematurely. Extra Yellow Herbs found later can be given to Ashley, or sold to the merchant for money.

2 Easter Eggs

Gangster Pose

In order to do this trick you need to first pick Leon's gangster outfit, and then equip the Chicago Typewriter machinegun. Reload the machinegun a few times in a row and Leon will pose.

The Throne

Leon may sit in the red throne after the laser hallway by inspecting it. Nothing interesting occurs, but it makes for an interesting screenshot.