Sinistar is just a bitch... but he's like a siren bitch... you simply can't resist him, even though you know he's luring you to your death... that's his appeal
the game wouldn't be so hard without the Warriors... they're what make the game such a bitch... in fact, I don't think I've ever made it past the Warrior zone before... so stage 2 is a far as I remember getting... yeah, I got skillz