I did Mendez last night and was fine but so far I've found the boss fights all pretty unintuitive in design, where I'm like wtf does the game want me to do here? Once you figure it out, at least like Mendez, there's no skill involved and it's not really a boss fight more like simon says (press O when it pops to evade, press L1 when it pops to counter, shoot barrels when he lifts them, go down when he builds up to hit up, go up when he builds up to hit down, etc...). It's ok design, but just doesn't feel natural like a DMC boss or something.