Not quite right. There are two sets of infinite character unlocks. DMD only unlocks the first set. SSparda or SDante and SVergil or SNelo.
As for the disgruntled member last page (I think.) Here's a couple ideas and how I deal with crap.
Nevan and Rebellion
Ebony & Ivory and Shotgun or Spiral (Whichever floats your boat.)
Trickster
First off practice the set on DMD Mission 2. because lv. 9000and up are all DT'd demons. REALLY IRRITATING. I wish they'd just give'em to us early so we don't get there and lose all that time if we die.
All right, basically start off with neven and use "stinger" I know it's not really called that, but same buttons. CONGRATS you've now learned the only move you'll ever use with neven. Believe me, it's enough.
Stinger with Neven does several things, it breaks up the crowd, it usually breaks most of their defense when coupled with a basic rebellion combo, and it luanches everyone into the air. The REALLY cool things is that the lightning still fries everyone for about two seconds after you use it buying you a few fractions of a second if you're surrounded.
After this, Immediately switch to rebellion and either hightime or rebellion combo I then use stinger and hightime-in the air shoot 'em up, helm crash or hit with neven, then helm crash. Crowd control with rebellion combo I-repeat.
Whenever you're in a tight spot sky star out of the crowd. You don't have to jump high to use it. Just miniscule jumps do the trick. The basic triple dash is extremely useful if timed well. You can dodge pretty much anything other than boss attacks. Use air trick to cover distances. it's real easy to hit the archers with it. just use a helm crash before you land or they'll snipe you out the sky. if you're REALLY good you can use air trick to dodge attacks, but I'm not gonna get into that. also note you can destroy arrows with neven's lightning.
That's a REAL basic layout that works very well in DMD. Of course there's several other combos you can do. like juggling with E&I the switching to shotgun and blasting them all the way to the other side of the arena... but those are easy. You shouldn't need my help for those. the useful thing about trickster is you can cut out of a combo you're doing and dodge incoming attacks immediately. An EXTREMELY useful ability in levels 9000 and up. Basically if you master this set, you should never be standing still. The set really doesn't let you do that anyway. A mile a minute 24/7.
Here's where I got a lot of my inspiration:
http://www.devils-lair.org/tourney.php
These guys pawn like I could never could.
Note: Don't just check out the tournament winners. Other contestants did just as well. They're all GODLIKE if that's even possible. They probably have a case full of Red Bull. Red Bull gives you wings man.
By the way, Vergil-Demon in Blue: Badass Sig. dude!
Sorry, I know they're locked now. I''m planning on making a Crazy Gameplay video on youtube, I'll use their footage. I'll hook up the link later.

Iron Chef...