Thx for the reply:)
And to repsond to all the other people on here. Yes I have played coop, in fact i've yet to even touch single player. And I'm not saying that this game is bad by any means. Perhaps me and my brother have played so much of this game that we need a break from it to make the freshness come back.
But the MAIN reason I expected bosses was because THIS IS a behemoth game, and I was expecting it to be kinda similar to alien hominid and castle crashers in terms of platforming and bosses.