I like RE 5 but it had zero scares and no atmosphere in terms of a Horror game - RE 6 brought some of that back imo.
See I felt that while RE5 had zero scares (Well, except for that Licker corridor towards the end) I thought the game had a well-crafted level of intensity; it used RE4's stop and shoot system, which is VERY successful at creating a suspenseful and intense atmosphere, especially when that Chainsaw guy came after you.
RE6 darkened the environments but I didn't find it scary in the least, and I thought all 4 campaigns were awfully paced with almost no thought put into creating suspense, atmosphere, or anything except "how much shit can we blow up."
And the aiming sucked. The environments were even smaller and offered even less exploration than RE5. The music was over-the-top and wouldn't shut up, the cover system (for the characters who used it) was awful, the bosses were terrible, the graphics didn't even look that good (while RE5 looked incredible for its time) the "leveling up" system was nearly useless, and all in all...sorry, but I just don't get it; even if you say "judge the game on its own merits and forget it's a Resident Evil game," RE6 was one of the worst action games I've ever played.
At least RE5 did what it tried to do (co-op action in an eerie setting with a plot that wrapped up pretty much everything that began with RE1) well. It was what it was, but it did it well. RE6 to me did nothing well, and I'm glad sales figures are showing that many people agree.