Impressive stuff to make 9 tracks in such a short time!
Echoing Cries of the Sentinel fits the "chaotic dungeon" vibe well. Love the arp sound, brings me back to playing DS games. The energy of Bait on a Hook is good. I think raising the volume of the percussion, especially the kick, would help a lot here. The key changes in The Undeniable Smell of Salt and Reflected Sky were nice touches. A Lullaby From My Memory screams Undertale to me in a good way.
You can't hide the touhou trumpet in Lingering Gold from me! I'm like Pavlov's Dog for soundfonts.
One thing that would help every track is some variation in note velocity, especially with the non-synth instruments. It would make everything sound much more fluid and less MIDI.
Nice job!