I've been getting more into AoS since I started with a humble Blades of Khorne warband for skirmish. I have my eye set on a Paths to Glory force now, but I'm coming up on a bit of a stumbling block against one of my mate's forces, dispossessed. Now he's a pretty shrewd tactician in any case, but his Paths to Glory force seems pretty brutal. He runs 2 units of 10 longbeards, and organ gun, engineer and warden king. He bubbles give pretty much his entire force re-rolls to hit, save, wound and re-roll ones when kept in close order. His engineer gives his organ gun a re-roll. I'm finding his shooting is pretty much deleting a unit of about 10 per shot, and once I do get to him he gets +1 save on the longbeards if I charge.
How do I crack this stunty nut with a Blades of Khorne Paths to Glory force. I'm looking at rend and mortal wound output, so I'm thinking a slaughterpriest would help for starters. I'm also kind of torn on whether to use Skullreapers of Wrathmongers. Any advice appreciated.