Holy moley, I have the ultimate strategy for light vs dark... I use my 6/0 lancer staff with +2 speed and +3 evasion. At the beginning of a match I use the power charge power, hiding behind a reflect barrier if needed. I use freeze power, autoreticle, and homing boost. From then on, I 1hko enemies from afar with my charged dash shots. I don't think I've ever lost a game with this strategy, except in the lava map.