250 to 1k blood rep in just half hour

U must fight against lil stacks ot shooters. U need in ur army one tank, one dps and one healer.
Also u first need to reach 250 blood rep.
And Heroism, Mass Heroism and Anathema.

Then u must kill almost all enemie shooters, but one small amaunt must still.

And just reapeat, Heroism, Mass Heroism and Anathema.