Reviewing episodes of a post-apocalyptic show is tricky, especially if it's without spoilers and (ultra) analyzing characters' decisions.
Neutrally speaking, I found it (+) satisfying with less gory action scenes than I expected, especially the (mild) scenes in the snow which didn't belong to the "hemoglobin enjoyable" close-up fights and instead an utter melee of frightened, bewildered and decisive people struggling in a super confused environment.
I don't mind the story and plots to be told in whole reverse, forward or a combination of the two. The reverse trick was good and added to the Loco atmosphere.
So far, what it needs is more bloody action, more gut-wrenching scenes and more stupid decisions leading to creation of more zombies. The VFX is very good, add to it some brains, flesh and bowels in fast-forward motion, splashing all around and into their noses and mouths.
Black summer is LOCO. Make us feel that "ice-cold" hellish fire for real, eyes glued to the screen and breathing hard.