One example from the beginning of the game:
An awareness creeps up on you. A mass lies hidden in your dead angle, soaking in some lurid, acidic sauce. It's bloated and shameful, a ball of meat surrounding you... This is a terrible line of questions, and it will only lead to more awareness of the meat-thing.
The song of death is sweet and endless... But what is this? Somewhere in the sore, bloated "man-meat" around you -- a sensation!"
I think the writing is trying to show the confusion of the protagonist, but it confuses me instead. I prefer something more striaght forward and just tell me what's going on.
Perhaps "pretentious" is too strong a word to describe it, perhaps "overly decorative" would be more appropriate.