hahaha, yeah dude! congratulations...

you know what, try finishing DMD without getting hit, and HELL AND HELL mode would be too easy for you, i tried finishing DMD without getting hit, although i wasnt able to perfect all the stages, and just like what patedecarne said, its pretty easy, its just like the devil hunter mode.....
hey patdecarne, im having a hard time beating dante during the second duel, it sucks, damn... i mean, i can beat him but i cant beat him without receiving damage.... i only got to finish a few stages without damages, and beating the stages with bosses are really hard,... in DMD mode of course...

... when you get to use dante nonetheless makes the boss fights easier since he has the real impact,.... when you get to hit just one!... just one! it will give you a wide opening where you can do it over and over again! damn... the damage is friggin heavy... except for the she viper ofcourse... real impact will just go through since the only time you can do real impact to her is when she is stickin on the ground, and when you do it, real impact doesnt push her up....
At first, second dante was a pain, pain and pain!
First and more important thing: never go far away from him, he's use shotgun and all will be over!
My strat: CS here is your best friend in the fight, because normal hits with red queen will be almost useless; in the beginning of the fight, charge cs; because you'll be far away from him, it's about 90% he'll use Ebony and Ivory, when you see his stance changing, immediately use CS, doesn't matter if is only in level 1, but even a level 1 CS can cancel Dante's ebony and Ivori, then if you see E/I coming, just use CS;
After that, get close to him, but not too close, and he'll try to attack you, just go a little further in his attack, use snatch, then use the two first hits from his basic combo, high time and in the air, release CS level 3; you'll take about 1/9 from his total life with this pattern; the key here is: approach a little from dante, and this will trigger any attack from rebbelion or gilgamesh, but why you won't be so close, the attacks won't hit you and you can use snatch freely, but do not use snatch while he's not attacking, because in 95% he'll escape from it;
another thing is about his Royal Guard(not Isshin): when he changes to royal guard, he won't attack you, never, but never attack him with red queen: he'll defend all of your attacks and will unleash royal release, and you'll know why this is the most powerful attack in the game, hehe, instead, use DT and snatch, because in RG you can buster him freely!
and in the other styles, just repeat the pattern!
won't be easy in the beginning, but you'll get used with his attack's patterns, and will know how to use snatch!