Good day, lads. I want to ask you about how you deal with Ultramarines with Guilliman armies. I have played several games versus them and suddenly realized that I can't actually win these games against Guilliman + literally anything. I would not lie, my opponent is quite experienced player, still the army he plays is actually nothing special. It's all bout endless rerolls of everything, and I'm not that good at safe rolls (if this can be an issue ). When your opponent hits with 90% of everything and wounds with 80% of them hits, it's pretty difficult to survive, and I have no actual idea on how to counter this thing. It's usually Guilliman + centurions + any kind of heavy support, for example predators or land raider.
My army is a mixture of detachments of different chaos legions. Commonly I bring some Spearhead detach. on Alpha (havocs, obliterators) and Batallion with Berzerkers + Chaos Lords in Rhinos (sometimes Chaos Land Raider) on World Eaters.
I'm eager to hear your opinions on this topic, please share your thoughts and experience, thank you.