I remember seeing an early video for that. I hated it, because they made the bolt pistol do the same kind of thing Dante's pistol in Devil May Cry does. I.e, nothing at all.
It's not a peashooter, its A GUN THAT SHOOTS MINIATURE EXPLOSIVE ROCKETS! MAKE IT ACT LIKE ONE!
Apart from that, I'm pretty optimistic. But the Imperial Guard are always better. Sure you can have your huge armour and genetic enhancement and what is essentially an RPG pistol, but it takes real balls to take on the galaxy with naught but a lasgun and flak jacket.