spent some time looking at the fsm for hu and found that after his big attack, which side he teleports to is only rng if you stand in the center of the arena. if you are on the left side, he is guaranteed to tp to the right, and if you are on the right side, he is guaranteed to tp to the left side. youre able to start moving right after the last pancake spawns
here are some screenshots of the farthest left or right that you can stand.
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