Probably going to be a bit harsh here, but here we go:
Tournament worthy, probably not to be honest. For a start you don't have 9 Oblits

(sarcastic comment, incase anyone was thinking of taking it seriously).
Few things 'wrong' with it, considering you've asked if its tournament worthy, basically rhinos

But you don't want mech.
If your footsloggin, your already at a disadvantage against a lot of competitive armies (think, how are you ever going to catch up with Venom spam, over power
GK in the midfield, out shoot
IG, deal easily with any kind of mech spam?).
I personally wouldn't
DS terminators, which I guess is what your planning on doing here, I would take (reaper?) autocannons instead of
HFs, tzeench icon isn't very fluffy at all when your playing a deathguard army, but when you have over 5 Terminators, I think its almost a must have icon to be honest, makes Chaos terminators more survivable. Try and fit a Chain/powerfist or two in each squad, maybe a pair or two of
LCs would also help.
2 Plasma guns in every squad would be best, would also be tempted to fit in a couple of
PFs, maybe drop a whole squad to do this (that buys you 4 Plasma guns, 2
AC and
PF and just 4 points off another
AC with powerfist).
I also think Havocs may be of more use than Oblits here, 300 points of Obliterators, doesn't turn into that many havocs unfortunately, would buy you nearly 12
ML Long fangs, but Havocs aren't that cheap :(
P.S
Like your terminators in the gallery.