hmm im running a limiter in my mastering chain, but other than that there really isnt much group compression going on. As far as the kick goes, its really nothing more than a some slight EQ and parallel compression.
Guitars are too quiet and just sound really thin. I like your kick drum sound tho, even though it's a bit loud in the mix. But that could be due to the guitars being quiet. What was the kick sample you used exactly?