juonryu2nd | Insanity Fortress - Lethal Crisis BGM @juonryu2nd | Uploaded September 2015 | Updated October 2024, 20 minutes ago.
This one seems slightly different from the original

大雪戦 doujin game リーサルクライシス "Lethal Crisis" BGM
Also used in リーサルアプリケーション "Lethal Application"