Complete the game to unlock:
Alternate costumes for Ashley, Leon, and Ada
Infinite Rocket Launcher
Extras menu with "Bonus", "Separate Ways", "Assignment Ada", "Mercenaries", and "Movie Browser" options.
"Wii Edition credits" option in the "Bonus" menu.
Complete the game on Professional difficulty to unlock the PRL 412 weapon.
Complete Separate Ways mode to unlock Ashley's armored knight and Leon's suit.
Complete Assignment Ada and Separate Ways mode to unlock the Chicago Typewriter weapon for purchase for one million Pesetas.
Complete Mercenaries mode with all characters with a five star rank to unlock the Handcannon weapon.
Bonus characters(mercenaries mode):
Unlock the listed character in mercenaries mode by getting a four star rank in the corresponding mercenaries mode level.
Ada Wong - Pueblo
Albert Wesker - Waterworld
Hunk - Island
Jack Krauser - Castle
Remain idle at the title screen to view a hidden video. Another can be seen by pressing B at the main menu.
Open doors quicker:
When the "Open" command appears, tap A(2) to kick the door open. It will also damage any enemies behind the door.
Shoot the bell at the church three times and some villagers will appear. Kill them to get money or other items. Repeat as desired.
Reticule feedback:Equip the handgun and aim the on-screen reticule at a torch or suspended light. The reticule will some times turn red and deliver a jolt in the wii-mote.
Shoot 10 of the fifteen blue medallions in the game. There is a map you can find in the farm area just beyond the first village with the bell tower. After collecting the map, the locations of all fifteen medallions will appear on your map. When you've destroyed at least 10, talk to the merchant for a free gun.
Broken Butterfly Weapon:
In the hall south of the hedge maze there is a locked door. Return to that area with Ashley, piggy back with her and she will unlock the door. This reveals the broken butterfly.
Thompson (Chicago Typewriter):
Beat Operation Ada, and the "Chicago Typewriter", a Thompson with 10.0 firepower, infinite ammo, no reload, and the fire rate of a maxed out TMP, becomes available at the merchant.
Beating Operation Ada will only unlock the Chicago Typewriter for Ada in her Separate Ways mission and not any other mode.
To unlock the Thompson for Leon's mission you need to beat the Ada's Separate Ways mission.
Special Costume 2:
Complete the game a second time (you must load the once-cleared game file) on Normal or Professional difficulty (the costumes are stored separately with each difficulty) for special costume set 2.
Leon can do some hat tricks with this costume set. I haven’t had the chance to test out how to perform all the moves, but I believe you have to have the Chicago Typewriter weapon equipped to perform these somewhat comical actions (see list below):
Hat Adjust: Hold the ready weapon button (B) and perform the reload weapon gesture with the Wii Remote. Since this weapon has unlimited ammo Leon will just adjust his hat.
Hat Toss: Hold the ready weapon button (B) and perform a quick DOWN then UP motion with the Wii Remote. This is the more comical of the two gestures, but doesn’t always work; you may perform the Hat Adjust move more often.
Ashley will unlock a metal suit of armor that protects her from any damage and prevents enemies from carrying her away. Now you can leave Ashley were ever you desire in the current area without worrying about her being child-napped.
To center your gun when aiming up or down tap the L1 button (takes out your knife) and you will quickly aim straight ahead.
Double Broken Butterfly Ammo:
If you buy the broken butterfly before you find it, you can hold twice the ammo. The shopkeeper will not sell you this gun if you already have it.
Before shooting a treasure into the dirty well, blast the piece of wood propping up the cover to keep the item clean. This is the only way that Ada will pick up those treasures and it will also ensure a higher value when selling to the merchant.
If you’d like to earn money to tune up or purchase additional weapons before you continue on with the game this is a good way to do it as long as you have time to kill.
Where ever you see chickens running around hang around for a while and they’ll lay an egg. Once you collect a couple eggs leave the area and come back. The chickens will lay more eggs each time you leave and return to the area.
One of the best locations to do this is the area where you first see the Blue Medallions and receive the memo from the merchant. That area has three cows are in the pen and two in the barn. There are about six chickens running around in both pens. This one can definitely take some time, but the chickens have all day and seem to lay an endless number of eggs.
White Egg = 300 peseta
Brown Egg = 600 peseta
Golden Egg = 3000 peseta
Ashley's Sliding Puzzle:
To complete Ashley's puzzle with ease, take a look at the layout below:
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.