It never reached that level of tension or intensity. It just felt like things were happening....and then it ended.
The battle never felt like it had urgency, and the action wasn't very exciting.
And then the biggest villain was killed in a joke. Ramsay turned out to be much better and dangerous than him. Why this villain has been so hyped, what was he trying to do, we still don't know.
The first episode of the series was called "Winter is Coming". Well winter came and went and it wasn't exciting.