I loved the fact that this inspired you via the Walking Dead (especially the Vocal after the drop at 02:28). Melody was great!
What didnt work for me was the sound design/mixing..it very high on the frequency end (especially found it hard to listen to at 3:34), like the treble was turned up. I think spending more time tweaking the bassline, kick to be punchier etc could help give it more of a 'f yeah' when it all kicks in and comes together.
Again, its a great song so please don't be offended by the criticism..it just felt hindered by the mixing, for me anyway,