Unlock the following characters for Mercenaries mode by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK Ada Wong - Earn a four star rank or better on the Pueblo map. Albert Wesker - Earn a four star rank or better on the Waterworld map. HUNK - Earn a four star rank or better on the Island map. Jack Krauser - Earn a four star rank or better on the Castle map.
Note: This requires several continues, which doesn't affect 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 will increase 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 allows you to proceed 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
Unlock the following bonuses by performing the corresponding tasks:
BONUS - HOW TO UNLOCK Alternate outfit for Leon, Ashley, Ada - Beat the game once Chicago Typewriter (Main game) - Beat Separate Ways Handcannon - Obtain five stars for each level in the Mercenaries Infinite Rocket Launcher - Beat the game once Matilda (New Game+ Only) - Beat the Main Game P.R.L. 412 - Beat the game on Professional Professional Difficulty - Beat the game once Separate Ways - Beat the game once
ACHIEVEMENT - HOW TO UNLOCK It Begins With a Ring (50 points) - Ring the mysterious bell. What happens after that, is up to you. Do Not Shoot the Water! (50 points) - Summon the master of the lake. Don't rock the boat. A Rock and a Hard Place (50 points) - Outmaneuver the rampaging beast, El Gigante. Secure the Ballistics (50 points) - Rescue the president's daughter, Ashley. Afterwards, the real fun begins. A Bloodline Severed (50 points) - Defeat the village chief in battle. A Terrifying Assassin (150 points) - Turn the tables on Verdugo, the right hand of Salazar. The Castellan Falls (50 points) - Defeat Salazar, and make your escape from the castle. The Ties That Bind (50 points) - Defeat Krauser, your former partner, in battle. We're Going Home (100 points) - Defeat Saddler in battle, and escape from the nightmare. A Heart of Steel (150 points) - Clear the game on the highest difficulty. What Are They Worth? (150 points) - Acquire all of the bottle caps in the game. The S Stands for Stylish!! (100 points) - Acquire all of the costumes in the game.
After equipping the Striker shotgun, aim the shotgun and immediately go into your inventory before the laser sight of the Striker has a chance to show up on screen. Equip any other weapon and exit out of your inventory. If done correctly, Leon will now run, climb ladders, knife, and shoot twice as fast. The glitch is disabled after a cutscene, an area transition, taking damage, opening doors, doing a quick-time event, or dodging an explosion.