Flowers of Antimony (The Explodatorium)
https://www.youtube.com/watch?v=ooyb51guYAE
The Vital Vitriol (Plague Knight Battle)
https://www.youtube.com/watch?v=oGwxRY5xdbM
La Danse Macabre (Lich Yard)
https://www.youtube.com/watch?v=74svajdoUok
The Apparition (Spectre Knight Battle)
https://www.youtube.com/watch?v=naTvOdM66_Y
A Cool Reception (The Stranded Ship)
https://www.youtube.com/watch?v=_IAzcv0mTZ8
The Stalwart (Polar Knight Battle)
https://www.youtube.com/watch?v=pCO8Ct1IazE
A Decisive Blow (StreetPass Arena)
https://www.youtube.com/watch?v=KQdUU1OALHE
Fighting Spirit (StreetPass Arena - Battle Ghosts)
https://www.youtube.com/watch?v=SLMmtNkKTgw
End of Days (Endgame Map Screen)
https://www.youtube.com/watch?v=F3mJBJ6HbqA
The Fateful Return (Tower Approach)
https://www.youtube.com/watch?v=PoTmPx5v-HA
The Inner Struggle (Tower)
https://www.youtube.com/watch?v=y7xUDPzNksU
The Forlorn Sanctum (Tower Lair)
https://www.youtube.com/watch?v=gVRlNyrn6hc
The Possessor (Enchantress Battle)
https://www.youtube.com/watch?v=dI8nj6LydBA
The Betrayer (Enchantress Final Form)
https://www.youtube.com/watch?v=MloUXqWXbkc
A Return to Order (Ending)
https://www.youtube.com/watch?v=OtT-68Au7U0
Reprise (Credits)
https://www.youtube.com/watch?v=c_308_EB2Xc
Which one is your favorite?
Sheet
My favorite is "Strike The Earth Plains of Passage" which you didn't include.