Sounds like the mix is clipping in a lot of places. Guitar tone is nice though, and I really appreciate you listing your software. Podfarm is now on my list of things to find.

As for your bass, I can barely hear it. Sounds like just the guitar doubled and down an octave.

Your drum samples sound good, but the mix itself sounds so bass heavy and mid-stomped, it's hard to enjoy them. The cymbals are very weak in the mix, sound all the same velocity, and the kick is hiding underneath your bass. A low cut will probably help you out there.

Siren is also way down in the mix. So are your synths. Let them soar above but not sublimate the rest of the mix. Balance is the key.

Cymbals I feel need to come up, and your toms are panned a little strange for me.

Somewhere there is a mastering tutorial I found useful... https://www.youtube.com/watch?v=amN1EmZv4Uo&list=PLi8lPSZQQxxZEvqcLWu-XNh2D4E1tNl35&index=4

I think this is the one. ReaEQ is probably the best plugin I've ever used for EQing out unecessary frequencies before compression, FX, and mastering.