Dread: The starkness of the piano solo in the high register sets up an eerie mood. The violin solo with piano accompaniment and soft cello and pad background give the imagery of a cut scene in an RPG that is very sad or melancholy. The tension builds nicely and I love the fade out with the return of the piano solo to round it out.
Triumph: I was surprised by the build-up into the Latin-inspired percussion section. I think the mood shift fits your description well though, starting somber but then feeling lighter and uplifted, while still not completely shaking the somber undertones. Good job with your orchestration! Thank you for sharing!