While I didn't get a chance to post about it last year, Boston's Death Injection dropped one of my favorite demos of 2013. Nothing too off the beaten path as far as my tastes go, this demo is just 6 songs of unapologetic Boston straight edge hardcore. Not as moshy as contemporaries No Tolerance, Death Injection play a little closer to their influences (Negative FX, SSD, etc.) in terms of speed.
This demo was self released. Failure Recordings just put up orders for the 7" pressing of this demo and I highly suggest picking one up HERE. I did (of course).