Mmm, I appreciate what it was going for with the whole meta-twist and such, but that's literally all the game had, and it was incredibly shallow and didn't evolve or lead to anything interesting. And without the story leading to anything new or interesting, all it had at its core was a very boring and standard platformer. Basically, this was the equivalent of a disguising a pig with lipstick to look like a hot girl: you jangled this shiny meta stuff in front of our face to distract from a very boring game.
Don't get me wrong, the game did have some nice things to it: I liked the goofy death animation ragdoll effect and will admit that the story was intriguing enough to make me want to play until the end to see what it would build up to. But I found that what it lead up to was...nothing interesting, so that made the disappointment even more palpable. Again, I understand if you feel this could be a bit unfair: back in the day a metanarrative twist like this, as simple as it is, would have been applauded for being so unique, but nowadays this is really old and well-worn territory and has been done way better.
I just felt so disappointed that it didn't do something like have the glitches form new platforms for a different route or introduce new glitched enemies or have you battle against the author more or something like that: instead all of the levels are just exactly the same boring levels as before except dipped in a really painful to look at chromatic aberration filter. You can't even choose to kill someone different to make your own choice for potential multiple endings: you can only do what you've written out for us.
Also as a further nail in its coffin, the game was very glitchy (in a non-intentional way, that is). For example, I had times where my corpse got punted too far to the right that it ended up spawning me farther ahead than I had gotten without any music playing anymore.
To quote Yahtzee on SuperHot: "Metanarrative-style fuckabouts is like the backstroke: if you start doing it before we're immersed, you just look like a twat."