I don't know how long this has been online, but Publisher's Weekly gives Antkind a big thumbs up. Avoid if you're spoiler-shy:

The Pynchonesque scope of Kaufman’s novel gives him liberty to have his opinionated narrator comment on innumerable cultural touchstones, especially in cinema, where B. throws shade with tongue firmly in cheek at filmmaker Charlie Kaufman, whom he derides as “a monster unaware of his staggering ineptitude.” B.’s outsized personality and his giddily freewheeling experiences make this picaresque irresistible. (Source)