What was good?
John Snow vs blue eyed cgi?
Terrible battle scene and no build up to it.
This season suuuuuuuuuuuuuuuuuuuuuuc ked big time
Not being able to put it in a context?
Do you not comprehend that Winter (the LONG winter) is COMING???
The White Walkers bring the cold with them, they attack when they feel the time is right.
The right time to attack Hardhome was to gain reinforcements (kill as many wildlings as possible) before the majority of the Wildlings in Hardhome had left the town.
They do not need build-up.
But when the Long Winter has spread across the land, everyone knows what will come.