Thanks for reading and for the comment :)
It may have been noticeable from the detail I took on detailing the gameplay here, but we REALLY liked how the game had us learning and then engaging in a challenge that was up to par with our expectations while not being absurdly punishing like we've seen in a few other games (Serious Sam 3 BFE's final level...)
Co-op mode can sure be super fun if you have someone else to play it with that can be on your level, more so if each other can clutch a dead player through the parry, but it does make fights slightly longer to accomodate for both players - so you two would have to be willing to practice enough to go through all those bosses
That said, I forgot to mention there's also a Simple mode for almost all bosses, which does simplify most phases and may remove at least one, but you can't get to the final challenges of the game unless you beat all the bosses in Regular instead (since that's the only way you get the contracts for a boss's soul). Still could be worth a try if needing a bit of an easier taste of each boss before trying to jump into the regular challenge.
RE: Cuphead - Running and gunning bosses like a cartoon character [ENG/ESP]