First of all props to Nect0 for discovering the strat with rushing to the last objective.

I've added a strat involving using Heavy Artillery Barrage to clear out enemies during the Kingdome objective before it even begins. It's just a little bit faster than doing it normally.

A few more seconds could be saved I think but it's mostly dialog lines that slow the speedrun down now.

When going for this strat I had a run where Bannon skipped his "Wipe them out, Parker!..." dialog during the Rescue the infantry objective. I think that ending dialogs on very specific timings might be doing that.