Everything is a tactic, it's just we don't see it or can even truly comprehend. He did explain it at the post conference.
I use to think I knew how to analyze what he was doing to some extent. In reality he's quite beyond the average fighter. His techniques are not only super advanced, but are done on improv. I mean a trip then knee to the plexus. That wasn't planned...it appeared and in a split second his mind calculated that was the right attack to implement.
His entire training staff was telling him to get out of the corner. Yet he did the opposite and showed he was in full control...
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.