Have u tried using Duty Bound? Might let your little ones survive a bit longer for more beats. I'm not a fan of the combo. Not to mention Titans Grip or any of the other ones,Dual Ranged Weapons for Hunters, if they destroy that while u have two weapons out your really hurting. Maybe drop the quills and try upping to 4 Hellreavers that way u have to option to go offensive to. When played with things like Dutybound or Vigilance it can be very nice.
Then again maybe u want to try to go more offensive and toy with the new Vengeful Gladiators Cleaver. You should probably look into this see how u like it. All in all this deck has potential and seems like it would be fun. Like i said before though u want to add the Finishing shouts somewhere.
Now it's your turn leave me feedback on my post. Building a new Deck for my GF. Titled: Needs Help "TankMan" Styled Deck.
"It's Better to Burn Out, Than Fade Away"
"When It Doesn't Go Your Way, Make It"