It wasn't a bad game, but it was terribly flawed, especially when compared to its predecessor.
Its like the developers were too busy trying to mish-mash as many "Western Concepts" as they could without giving thought to the characteristics that made Resident Evil 4 and before instant classics.
The whole partner aspect I felt was forced right in your face (I know Resident Evil 0 had a similar system, but at least you could swap between characters on the fly and even separate if you felt inclined to). You were pretty much daisy-chained to Sheva who's AI was while not being completely retarded could've been better, I've experienced a few times when she tried to take on a chainsaw with nothing but a handgun, ending in her unsurprising demise, and even if you set her to cover you, she still has this tendency to plow through ammo, even if you could've taken care of an enemy horde with a single shot and a conveniently placed explosive.
The inventory system was a mess, having to stop dead in your tracks to get an item or remap an item or find the item you picked up all in real time. So you can't move, everyone else can. I mean in other action games, take Half-Life for example you can still run and move while selecting the desired category of weapons, and in Metal Gear Solid you can access anything an everything on the fly with the push of the button, the action pauses, and you've still got a challenging game to play through. Was that really necessary? Especially when you're under RE's traditional limitations to how much you can move, which brings me to the last gripe I had with RE5.
The Control. This seems to be everyone's issue on every gaming blog this side of the Internet, and for the record, I've never had any issues with Resident Evil's control scheme from 1-4. Sure there was a transition period, but I've always gone through it with ease (and tend to be a snoot and laugh at those who can't figure it out, lol) so no surprise I went with the classic RE4 control option going into the game. It worked fine, but they had to switch the "Run" and "Action" buttons, and that was the biggest throw-off and piss-off for me. The past entries have always had a Square and X as "Run" and "Shoot" respectively, even the PS2 version of RE4 had the same scheme. Wouldn't you expect the RE4 scheme to follow the same suit? Why fuck with you like that? I mean they detail it in game as "the control style used in RE4" I'd expect it to follow that EXACT same style. Or at the very least give an option to button swap.
So yeah, big ol' rant-o-rage, but it was still a decent game. Same great presentation and gameplay like in 4, fun weapons, alot of really detailed environments. I'd still pick the game up when it becomes a "Platinum Hit" for $20 or whatever.
RE5 was obviously one of those games that tried to mix East and West together. But rather than a refreshing tropical blend, it felt more like a mixture of oil and water.