Really just wanted to go back and beat old bosses the people considered to be the most difficult at the time, so I made a video about it! enjoy~
(Essence of Evolution isn't real)

Thumbnail by: ITSK
check out his work here (translations for the arknights OPERATORS! manga~)
  / sleepywoodscans  

Time stamps:
Intro - 0:00
Patriot - 1:12
Mudrock - 2:49
Blood Knight - 4:17
A Few Other Bosses - 6:07
Who Would've Thought - 8:15