I keep getting caught by 4+ CSM players all spamming power attacks. How do I play around such a thing? I'm aware I shouldn't be caught in the first place, but it's literally unavoidable since it seems CSM just runs around in groups of 4 doing this.
Find your own group and walk around with them, bring more dakka, keep a grenade or a melta bomb in your pants, grab a bigga choppa.
Play Swooping Hawk, take off, find a perch and laugh your ass off as they impotently shoot their pistols in your general direction.