Arknights soundtrack

Mili - In Hell We Live, Lament Feat. KIHOW From MYTH & ROID   Limbus Company

Monster Siren Records, Erik Castro, David Lin, ZOEE - Misty Memory (Night)

Monster Siren Records, Adam Gubman, Elvin Shen, N2V, Lucas7 - The Theme [Variant]

Zwillingstürme im Herbst: Twin Towers In Autumn

https://www.youtube.com/watch?v=Wa8dIu_0zio&t=1s
Strongly recommend watching the video if you haven't watched it for once.

I do not own this song, it's belong to DJ OKAWARI