Hey Ustos, good work so far, you are really getting this guy blocked in.
I really like your concept.
A few cirts
I would have a look at how the torso is connecting to the legs.
Also I would say the overall proportions could use a little tweaking. I would recommend getting your references out and then using the move brush and transpose tools on a low sub d level to tweak them a bit more until he starts to feel a bit more cohesive.
Hope that helps
Looking forward to updates!