Alexander the IV is such a fucking crock of shit in Rogue Legacy. Whole boss is just play rng and see how long you can last til you lose!
Shadow thing is nigh on worthless because the skulls will camp right on fuckign top of it, you cant safely move anywhere because shit is flying everyone off screen. This is the dumbest shit I've ever encountered.
But he's dead.
Those bosses are so bad that when they added them to the game, it actually diminished my overall opinion of it. I don't think the game would have gotten nearly the positive buzz it did around here had it shipped with them included, they are horribly designed and unbalanced and don't suit the playstyle of the rest of the game at all. They also destroyed a lot of people's perfect game achievements as well.
On that note, Steam really needs to give games the ability to segregate achievements for individual DLC instead of just lumping them in with the base game. Then you could have things like each Pinball FX2 table having its own set of achievements instead of one massive list, you could keep the base game and DLC achievements separate, and it makes the DLC and expansion products more distinct. Can't imagine it will ever happen though.