So I had another game against dptdexys and his nurgle black legion
I said I wanted to try out fortification heavy and went with the following list:
Scouts
Scouts
Devs with assault centurion
Devs with assault centurion
Tacticals with bastion, assault centurion, supreme commander
Thunderfires
Thunderfires
Vindicators with hunter
Thunderbolts
Thunderbolts
minefields + bunkers
minefields + bunkers
minefields + bunkers

Setup, I tried to surround the objectives in my half with minefields, replaced the blitz with the bastion, and put both thunderfire batteries on overwatch
turn 1
I put both sets of devs on overwatch, dave put hellblades on CAP

I put tacticals and garrisoned scouts on overwatch, Dave doubles feral drawing the overwatch shots from the thunderfires and devs, it loses its shields and kills a couple of devs

Tbolts attempt to shoot warhound, get CAP-ed and suffer 3 hits, they jink and one saves

chosen double up and put a blast marker on thunderfires, also putting them in their ZoC

tbolts attempt to intercept hellblades, they miss with all 4 shots


Havocs double up and place a BM on thunderfires

Scouts double up and put a BM on havocs

Feral #2 draws out the thunderfires and devs overwatch, losing shields and taking 2 BMs, it hits the devs but only takes out the single rhino

Vindicators single up and hit warhound, they do 1 point of damage and it breaks

Retinue doubles up and puts a BM on thunderfires

second retinue singles and engages thunderfires, wiping them out
End of turn, all aircraft flyoff without incident, most stuff rallies and removes most blast markers, feral #2 rallies