I have way too much bias for this band, that's a give in. The lyrics while have a nautical theme (which is a plus for me) can get pretty stupid at times, and the musicianship is as tight as deathcore gets. The production does seem worse then their LP, and the vocals suffer from this. However it's pretty enjoyable, but if you want better deathcore then this look at the band's LP, or a lot of other deathcore bands for that matter.
HCTK may not be the best deathcore band by any means, but they've definitely shown progression from their debut album to The Omen. I personally felt that The Omen has a slightly more complex sound than their previous releases, which is a plus. If you have time, give it a quick listen.