[Tyles]

Here are some things I do on occasion when I go through a Devil May Cry game:

DMC1:
Devil Trigger is for Pansies
Play the game on Hard mode. Use only Sparda (there is a point in the game where Ifrit is needed, and where Sparda is no longer available) and only Ebony & Ivory. One Vital Star per mission and no other items. Should be enough.

DMC3:
No Bloody Cheating in the Bloody Palace
Once again. No Super forms for Dante or Vergil. No healing pillars, flame only. Devil Trigger can be used for healing purposes.

Hit Me with Your Best Shot
Deflect all attacks with Dante's Royalguard.

That's about all. If you got any, post them.

[Dark Elf]

DMC 3 about Bloody palace I did.
What about: Beat Vergil #3 on V. Hard mode, no damage and no DT'ing and only Beowulf