Set Sail! - Sounds great! It does indeed sound like we're embarking on a journey. It's full of adventure and optimism.
The Market - Oh this is neat. I quite like how this sounds. I can just imagine a market with NPCs scurrying about to this theme. I think the marimbas give it a very busy vibe. Like people are doing work everywhere. I also like the little choir accents. Very cool.
Game Over / Victory - I really like that you included both a victory and game over theme. It makes it feel like a very complete soundtrack.
Drifting Away - Nice. I like how the theme is slowing down and pitching down over time. It really conveys that feeling of drifting away.
Amazing work!