It's a unique album, now checking Discogs and indeed two different people doing the mastering: Mastered By – Alienated (tracks: 2, 3, 6, 7), Henrik Munch (tracks: 2, 3, 6, 7), Jens Bundgaard (tracks: 1, 4, 5, 8)
Producer, Written-By – Jeffrey D. Jensen*, Thomas Larsen
A shame, you would at least expect the mastering to be harmonious and similar throughout the whole album! I haven't listened to the album for a while now but remember for instance the hi-hats sounded very quiet in some tracks and louder in others.