Dirty Work- I like the trumpet thingy. Overall good. Maybe add another counter-part melody, maybe more trumpet. The ending was weird...off beat.

Battle Meditation- Very good, I like what you did at 2:00ish.

Unholy March- Nice beat, lots of potential. If it could build up more, it would be perfect. Maybe like an emotional background string (high pitched) to against the main melody. Or maybe a drum roll or something. But overall very good.