Some of the complains are, "too much dialogue and not enough explanation sentence that makes reader hard to differentiate between the speakers", "even when there's explanation sentence, it's usually the MC explaining the parody", "boring and repeatitious parody", "survival game setting story yet there's almost no image of survival game". Basically, the review says it's trash lol.
The only good review said, get this if you enjoy IS and just want some mindless LN generic plot