Shou has been picking off random goons for food here and there, but not as much as he should and is a bit hungry. While the altered DNA might not be that good for him, he will still go after the mafia as only a half-starved vampire could. He's pretty much bullet-proof, tearing limbs proof but hasn't regained his full vampire powers yet, so am thinking that this fight would trigger something vampiric for him. Here's hoping it's not the bloodlust frenzy XD

Anyways, he's good with tactics ala gangster related stuff, guns and as a meat shield.