Well as I had my first game with this army last night and it was a good learning curve. I'm not used to having to protect tanks and made a few rookie mistakes about protecting them.
My list as as follows
Cadian battle group formation
Battle group command - company command squad - 4 melta, chimera with dozer blade
Emperors fist armoured company
2 vanquishers with las cannon and MM sponsons
Exicutioner
2 leman russ battle tanks
Enginseer
Assault company
Company command -4 melta, power fist
2 vet squads - 2 melta and HF
1 vet squad - 3 plasma
Helhound
Adaptus astra telepathica division
Astropath
Primaris psyker
My opponent played a tratior legion army, black legion theme he had the following:
Daemon price of Nurgle with wings, level 2
2 squads of possessed in rhinos
Renegade knight
Maulerfiend
6 nurgle bikers
2 squads of cultists
3 terminators
helldrake with auto cannon
5 raptors
We played Big guns mission with vanguard deployment