Briefing - Cool. Definitely getting an old school game vibe here. I quite like that synth choir-ey sound and how it counters the string. Also like how the bass line keeps chugging along. Feels a bit spy-ey.
Chase! - Neat tune. I quite like how this sounds, especially with those little chords nicely keeping the pace. It sounds quite friendly. I'm not sure if I quite feel the urgency of a chase until the very end, when it really starts to ramp up. Still a great track though!
Mission Complete - Yeah, this definitely sounds like a mission complete track. Excellent work on this one! I really love the little jingle at the start too. Definitely harkens back to the early console days.
After listening the entire soundtrack once more, I think my favourite was the briefing. I really like the suspense in that one.
Great work!