Things I liked:
That it was told from a male's POV.
The Chapter titles rock (Kick-Start My Heart, Don't Rock the boat, Baby, Papa was a rolling Stone, Sweet Child O' Mine..)
Sam's friend Ramon reminded me of "Weevil" from Veronica Mars. So I instantly liked him.
Biggest "like" is that it's about a necromancer. I used to play an online game where my main character was a Necromancer! There's nothing more fun then raising some undead minions