General Dungeon Area Theme : NCT127 - The 7th Sense [Instrumental]
Alternative General Dungeon Theme : VIXX - Fantasy [Instrumental]
Boss Fight Theme A - Where I'm just being nice and wants to "play" with you : VIXX - Dynamite [Instrumental]
Boss Fight Theme B - Where Stuff gets real, 2nd form, yadda yadda. : Noisestorm - Antihero
Boss Fight Theme C - Alternative song to A : BTS - Fire [Instrumental]
Bonus Boss Theme - BTS - Cypher no. 4 with the bass boosted as much as possible [warning : ear murder. turning down the volume is encouraged.]