You've gotta finish the game in under five hours.
Maybe?
Yes, you can unlock the Infinite Rocket Launcher in Resident Evil, specifically in "Resident Evil 5." To obtain it, you must complete the game on any difficulty setting, including easy mode, while achieving an S rank in all chapters. Once you've met these criteria, the Infinite Rocket Launcher will become available for purchase in the in-game shop.
there are no cheats for resident evil4
beat the game on normal
You have to buy the weapons, and get infinite ammo, new versus characters, outfits, and extra screen modes by going to bonus features when you click 'play'.
Yes, you just need to finish the game and play the Mercenaries mini-game. That way you'll unlock infinite-ammo items.
Finish the game.
Beat the game first
beat the game in 5 hours
1,000,000 petas
Sorry there is no unlock-able like that.
To do this, you need at least one normal weapon, and the Infinite Rocket Launcer. At the begining of each chapter hit an enemy with any weapon once (any weapon other than the IRL) You can then fire away at anything with the Rocket Lancher, no matter if you hit or miss an enemy, and you will get 100% hit rate at the end of the chapter. This happens because the game does not register the Rocket Launcher hits like the other weapons hits.