If you would like something different from the growl infused death brutality, you can always go with the scream filled black metal slicing.
Marduk - Panzer Division Marduk
Immortal - At The Heart Of Winter and Sons Of Northern Darkness(YOU NEED THESE)
Goatwhore - Any of these guys work will serve you well for a mix of death, grind, black
Mayhem - De Mysteriis Dom Sathanas(Essentially perfection within the realm of the 'first wave' of black metal. Chainsaw guitar riffs and vocals that sound like a monk being tortured)
Death recommendations:
Suffocation - I've only heard one of their albums (Pierced From Within), and it kicked my ass and made me it's bitch.
Antaeus - Cut Yourself And Worship Satan(Super raw and blackened)
Onward soldier, you'll be scaring Christians and old people soon.