Castle Vein + Hall of Sacreligious Remains (Ultrakill OST) 

I simply added the Castle Vein remix from 6-1 to the end of the original. Pretty sure "Sacreligious" is a typo, but that's how it's written in the official release.
Source album #1:
• ULTRAKILL: INFINITE HY...
Source album #2:
• ULTRAKILL: IMPERFECT H...
Please buy Ultrakill.