Resident Evil 5 Message Board  

You have to fully upgrade a couple of the weapons to unlock a few extra weapons like the bow, chaingun, hydro, the 3 round burst hand gun, and the super magnum. Then you will own them all. I can't remember which guns you need to upgrade tho.

bow= fully upgrade the bolt action sniper rifle(the first one)

chaingun= fully upgrade the first machine gun(the one at the public assembly)

hydra= fully upgrade itcha shotgun(the first shotgun)

3 round burst handgun= fully upgrade your first handgun

handcannon= upgrade the S&W M29 magnum(yet again the first magnum)

hope this helped.

I know what you mean, I went looking for them as well, and what most sites try to do is get you to go to the page with the google search reading "Resident Evil 5 cheat, codes, etc.", but you arrive and find hints and such, so as i'm sure you've gathered, no there are no cheat codes.

As far as this game and it's replayability with it's built in cheats, well I've gotten unlimited Magnum (1st one), Handgun (1st one), and Shotty (first one), being able to 4 or 5 shot a boss that gave me a 15 minute battle before is kinda boring, that first bat thing you encounter takes about 10 shots, before I had to set mine, shoot, run, etc. It takes some of the fun out of the games design, but you always have the option to not use the cheats, so it's up to you how you want to play.