tohopes | Wolfenstein: The New Order music - Deathshead's keep (final level) @tohopes | Uploaded 7 years ago | Updated 3 hours ago
This track plays during the final level of the game, when B.J. returns to Deathshead's keep to finish him off.

The only uploads of this track that I could find on YouTube had low volume or included in-game sounds, so I extracted the sections of this track from the game's resource files and stitched them together in Audacity.

I do not know of any authoritative source of track names for the game's music other than those included in the released OST. Other people have uploaded recordings of this tune under the names "Kill Deathshead" and "Deathshead's Compound Main Halls".

This tune is comprised by the following 5 files:
sound/music/c16p1/mus_c16p1_battle_v2_start.wav
sound/music/c16p1/mus_c16p1_battle_v2_s1.wav
sound/music/c16p1/mus_c16p1_battle_v2_s2.wav
sound/music/c16p1/mus_c16p1_battle_v2_s3.wav
sound/music/c16p1/mus_c16p1_battle_v2_s4.wav

Roughly:
0:00 start
2:25 s1
3:37 s2
4:48 s3
6:00 s4
... s1 again
... s2 again
... s3 again
... s4 again
... fade-out over first 15 seconds of s1

I extracted the files with QuickBMS using the instructions and script posted by spider91 on ZenHAX:
http://zenhax.com/viewtopic.php?t=810

The background image I used for this video is a wallpaper submitted to Alpha Coders Wallpaper Abyss by Deridder45:
wall.alphacoders.com/big.php?i=419745

from Wolfenstein: The New Order (2014)
composers: Mick Gordon, Fredrik Thordendal
game developer: MachineGames
game publisher: Bethesda Softworks