I'm not sure you understand what "repetitive" means. It doesn't mean "I played this enough to memorize it!"
Stealth runs in gaming generally require repeated levels to pull of flawlessly (unless you're very good) but are not repetitive for it.
Alternatively, you've got Pac-man. Same thing, all the time, by design. Or, to use a less obvious example, something like Legacy of Kain: Defiance. The formula for that game was [puzzle room, switch characters, puzzle room, switch back, combat room, switch, combat room, switch] repeated for most of the game. Or, say, an open-world game will get complaints for repetition if the missions start getting too clone-ish. It's not because the player memorized it, it's because the developers failed to design variety.
That said, to the topic: "This game has too many bugs/glitches!"
I hate this complaint. And every time I hear it, I just roll my eyes. Bugs just aren't a very solid criticism. "Oh, your game was full of bugs? I have the same game, never hit a single problem. What were you complaining about again? Your bad luck?"
I found ONE bug in Skyrim, not even a game breaker, and supposedly Bethesda is king of bugs. Bugs and such are ultimately a crapshoot that comes down to luck, and it's not the game's fault if your luck is bad. Plus many who complain about bugs play games at release, or even pre-release builds. Their complaints don't hold up if everyone else plays a patched-up version.
(Note: I actually hit my first game breaker in Arkham City and had to restart the game about halfway through. A quick Google search showed that nobody else had hit this particular problem so complaining about the bug would have been a nitpick at best.)