Strong start. Right off the bat i can feel myself amidst the action.
-Nice use of what i believe is dissonance as well. I can also here some "mission impossible" inspiration as well.
-Transition smoothly and quick between tempos and sections
-This is like a masterclass in transitioning between sections.
-This is Quite the adventure. I don't think this would work as an OST since it would easily outshine the game. But this is great flex that displays all the skills (and then some) necessary for composition in any industry. in fact i would consider this to be a great standalone demo to send when people ask about your work.
Keep up the great work, i gave full marks!!