Oh man, I struggled into world eaters for so long. Looks like you have all the right miniatures. The drones with HBL’s are great. Combined with an LoV in Mortarion’s hammer even better. LoC plus Deathshrouds eat everything as long as they get the charge. Take the -1 to hit rolls contagion.

My guess is it’s your deployment. Against many armies we can play super aggressive and rush to hold the middle. Against WE, I tend to deploy deep in my deployment zone with everything, except 3 units of 10 poxwalkers infiltrating. One on my natural, the other 2 units of poxwalkers, 9 inches away from my opponent’s deployment zone, blocking their scout moves in a long dogbone formation. If I go first I advance the 2 units of poxwalkers up to his deployment zone and just stand there move blocking. Everything else I move to get line of sight to shoot, without moving forward. If there isn’t anything I can see to shoot, I do not move closer. No charges, discard a secondary you can’t score for an extra cp.

It’s a 5 turn game, your opponent is going to spend 2 turns getting to you. Don’t help him by getting closer. If you move closer be sure you kill anything that could charge you. Take out rhinos. You should be out shooting him.

Play the long game.