[AcidBeast]

This promo soundtrack is interesting as it contains some pieces that are not included on the official versions.
Since I'm not familiar with the game I can't tell if that's because they just haven't been included on the official release or if these are unused tracks from an early development stage back in 2008.
Although, most of them are just renamed versions.

The soundtrack compares with "Darksiders: Original Soundtrack - Director's Cut" as follows:

01 Opening Credits -> 2.12 Rescue Rain
02 Title Screen -> 1.05 Eden
03 Abaddon Angelic -> [Unused/missing on SE release]
04 Achievement -> [Unused/missing on SE release]
05 The Charred Council -> Prototype version of 2.06 The Council
06 Action Moment -> 1.06 Flight Path
07 Dark Moment -> [Unused/missing on SE release]
08 Strange Moment -> 1.03 Strange Moment
09 War's Theme -> 2.15 War's Theme
10 Weeping of Angels -> 2.13 Vulgrim
11 Black Moment -> [Unused/missing on SE release]
12 Flight over Ruined Eden -> 2.08 Flight over Ruined Eden
13 Chain Spider -> [Unused/missing on SE release]
14 Evil Curse -> [Unused/missing on SE release]
15 In Prophecy -> 2.09 In Prophecy
16 The Greaver -> [Unused/missing on SE release]
17 Red Horseman -> [Unused/missing on SE release]
18 Samael and his Prison -> [Unused/missing on SE release]
19 The Subway -> [Unused/missing on SE release]
20 Battle Moment -> 1.10 Keeping Pace
21 Nex Sacramentum -> 1.18 Nex Sacramentum
22 Uriel -> 2.17 Uriel
23 Epic Moment -> 1.14 Epic Moment
24 End Credits -> 2.18 End Credits