@SpiderRumor: You may be right with Dustforce, I didn't play too much of it once I realized what it was. If it's promoted and presented as that sort of game, though, it doesn't deserve to be denigrated for misleading anyone.
As for Snapshot, my issue with that is more that it chooses (possibly deliberately) to never checkpoint anything, and thus requiring an increasingly elaborate series of very precise, very demanding uses of the photo mechanic to make sure things are in the right place at the right time when you might be whizzing through the air or some such. I'm clearly not making that game any easier by going for the collectibles (of which you need to collect all in one go for it to count, it would seem), but I reached a point soon after I was taking pictures of those springy things and having to place them underneath my robot dude in mid-jump at the exact right moment just before the apex of the leap, and then leaving them somewhere high up I couldn't reach without their help and having to reset the whole stage, where its cute gimmick and presentation had worn out its charm. And dying on a bunch of spikes because the regular jumping is a bit floaty and losing all that progress is not super endearing either. It probably should've scrapped all that super-precise timing, or kept it and made failure less of an issue as with something like Super Meat Boy. I'd have preferred more emphasis on the puzzle-solving myself, but I guess that's a matter of personal taste.
Regarding Assassin's Creed, I'd say two instances counts as the start of a trend. One would be an anomaly. I, like most going into ACIII, figured AC:R was an unfortunate aberration that occasionally happens when you add new elements to an existing system and mess up. That AC3 messes up in many of the same ways was dispiriting, in that it felt like no lessons were learned. At this point it feels like the next one has a better chance of being just as bad rather than some big redeeming entry, so I'd say the series could use a break for a while, or at the very least a longer period in development.